1. Abebe Girma, L.J. Dawson, G. Detweiler, T.A. Gipson, T. Sahlu,. Hagenia abyssinica (Kosso) for internal parasite control in goats,. Langston University, Langston, OK,Debub University, Awassa, Ethiopia, 10-12 November, 2000.
2. Adah, C.A., Abah, J., Ubwa, S.T. and Ekele,. Soil Availability and Uptake of Some Heavy Metals by three Staple Vegetables Commonly Cultivated along the South Bank of River Benue, Makurdi, Nigeria. International Journal of Environment and Bioenergy, 8(2): 56–67, 2013.
3. Adeloju, S.B. and A.M. Bond. Multi element determination in biological materials Agency for Toxic Substances and Disease Registry (ATSDR),. Toxicological profile for copper. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service, 2004.
4. Amare Getahun,. Some common medicinal and poisonous plants used in Ethiopian folk medicine. Addis Ababa University, Ethiopia, 1976.
5. Annan K, Dickson RA, Amponsah IK, Jato J, Nooni IK.,. Pharmacognostic evaluation and physicochemical analysis of Paullinia pinnata L. (Sapindaceae). Journal of Pharmacogn Phytochem; 2(2), 2013.