Amenu G (2005). Epidemiology of GIT nematode of small ruminants in different agro ecological zone of central high lands of Ethiopia. Agriculture sample survey, Volume II, report on livestock and livestock characteristics, Ethiop. Stat. Bull. P 331.

Annon (1997). Manual of Veterinary Parasite Laboratory Technique. Technical bulletin, no.18. Minister of agriculture, fisheries and feed, London, P 129.

Armour J (1980). The Epidemiology of Helminth Diseases in Farm Animals. Vet. Parasitol. 6:7-46.
Crossref

Asnaji M and Williams M(1987). Variable Affecting the Population Dynamics of Gastro Intestinal Helminth Parasites of Ruminantes in Sierraleon. Bull. Anim. Hlth. Prod. 35:3087-3096.

Assefa D, Sisay L (1998). Preliminary Investigation on Seasonal Occurrence of Parasites in Farm Animals around Sheno. In 5th National Conference of Society of Animal Production of ESAP. Addis Ababa, Ethiopia. pp. 128-137.

Bayou A (1992). Prevalence of GIT Helimnth of Small Ruminants in Buno Province of Illubabor, DVM Thesis, AAU, FVM, Deberezeit. Ethiopia.

CSA (2009). Central Statistical Authority Federal Democratic Republic of Ethiopia Agriculture Sample Enumeration Abstract.

Donald AD, Waller PJ (1982). Problems and prospects in the control of helminthiasis in sheep. In: Symons LEA, Donald AD, Dineen JK, editors. Biology and Control of Endoparasites. New York: Academic; P157.

Ento S (2005). Ticks in Ethiopia Internal Documents: 

Fikru R, Teshale S, Reta D, Yosef K (2006). Epidemiology of Gastro Intestinal Parasite of Ruminants in Western Oromia, Ethiopia. Inter. J. Appl. Res. Vet. Med. 4:31-34.

Foriet W (1999). In: Reference Manual of Veterinary Parasitology. 5th (ed). Wiley Blackwell, New York, USA, pp. 22-26.

Gebrekiros A (1990). The Study on Ovine Helminthosis in Awassa and the Effect of Control with Nilzan. MSc thesis, AAU, Faculty of Animal Science, Addis Ababa, Ethiopia.

Gebreyesus M (1986). Prevalence of GIT Helminths of Small Ruminants in Gondar Administration Region. DVM thesis, AAU, FVM, Debre Ziet, Ethiopia.

Genene R (1997). Study on Prevalence of Ovine Gastrointestinal Helminth in and around Kombolcha, DVM Thesis, AAU, FVM, Debre Ziet. Ethiopia.

Gonzalez R, Gonzalez A (2004). Alternative for the Control of Gastrointestinal Nematode in Sheep.Conf. EEPF Matanzas, Cuba.

Haileleul N (2002). Study on prevalence of GIT helminth of small ruminants in and around Woilyata Soddo, Southern Ethiopia. DVM thesis, FVM, AAU, Debre Zeit. Ethiopia. P353.

Hansen J, Perry B (1994). The Epidemiology, Diagnosis and Control of Helminth Parasites of Ruminants. 2nd edition. Nairobi, Kenya; ILRAD.

Jones R (2001). Sheep Paraistes and Disease. 

Jorgan H, Brain P (1994). The epidemiology, diagnosis and control of helminth parasite of ruminants ILRAD, Nairobi, Kenya, P 150.

Kaplan M (2006). Up Date On Parasite Control In Small Ruminant Addressing The Challenge Posed By Multiple Drug Resistant Worm. In Proceeding of the America Association of Bovine Practioners, September 21-23.Saint Pual. USA.

Mulugeta T, Gremew B, Molalgne B (2011). Prevalence of GIT parasite of sheep and goats in and around Bedelle, South Western Ethiopia. Inter. J. Vet. Med. 8:2.

Regional Agriculture Bureau of Dire Dawa (RABDD) (2006).

Sisay MM, Uggla A, Waller PJ (2007). Prevalence and seasonal incidence of nematode parasites and fluke infections of sheep and goats in eastern Ethiopia. Trop. Anim. Health Prod. 39:521-531.
Crossref

Soulsby E (1982). Helminth Arthropod and Protozoa of Domestic Animals, 7th edition. Bailliere Tindall. London. Lea and Febiger, Philadelphia, pp. 212-258.

StataCorp (2009). Stata: Release 11. Statistical Software. College Station, TX: Stata Corp LP.

Tekley B (1991). Epidemiology of Endoparasite of Small Ruminanates in Subs Sahara Africa. 4th. National livestock improvement conference.13-15 November. Addis Ababa, Ethiopia. pp. 7-11.

Tembely S, Hansen J (1996). Helminth Disease of Small Ruminants in the Tropics. A review of epidemiology and control in small ruminant, Australia. 74:123-127.

Tesfaheywet Z (2012). Helminthosis of sheep and goats in and around Haramaya, Southeastern Ethiopia. J. Vet. Med. Anim. Health 4(3):48-55.

Tesfalem G (1989). Study on Prevalence of Nematode Parasite on Small Ruminant in South Western Parts of Bale Zone. DVM thesis. AAU, FVM, Debre Ziet, Ethiopia.

Tewdros A (2007). Prevalence of Lung Worm in Small Ruminant in Maichew. Veterinary Technology (unpublished).

Thrusfield M (2005). Veterinary Epidemiology 3rd edition, UK. Black well Science. P 183.

Tibbo M, Aragew K, Philipson J, almfotos M, Nasholm B, Ayalew A, Rege JE (2006). Economics of subclinical helminthosis control through anthelmintics and nutrion, indigenious Menzi andAwasi-menzi cross breed sheep in Ethiopia (unpublished).

Tony W (2007). The Veterniary Epidemiology and Economics Research Unit (VEERU). Veterinary parasitology, 2nd Blackwell Science, UK, P 307.

Urquhart G, Armour J, Duncan Jand Jenning F (1996). Veterinary Parasitology. 2nd ed. Blackwell science, UK. P 307.

Wang C, Que J, Zhu X, Ni H, Zhou Q, Zhang H, Lun Z (2006). Survey of Helminth in Adult Sheep in Heilojiang Province, Peoples Republic of China. 140:378-382.

Wesongh J, Chemulitti F, Wesonga L, Munga P, Nagdre MG (2003). Trypansomosis and Other Parasitic Disease Affecting Sheep and Goat Production Groups, Narobi district, Kenya.

Yoseph D, Derje W (1992). Investigation of Common GI parasite of small ruminants in and around Wallayta Soddo, DVM thesis, AAU, FVM, Debre Ziet, Ethiopia.