APA

Butterworth M., Hailu M., Sahlu M. & Teklu S. (1985). Beef cattle productioin from tropical pastures : a descriptive bibliography. Addi Ababa: International Livestock Centre for Africa.

Chicago

Butterworth M.h, Hailu Michael, Sahlu Marcos and Teklu Sirak. 1985. Beef cattle productioin from tropical pastures : a descriptive bibliography. Addi Ababa: International Livestock Centre for Africa.

Harvard

Butterworth M., Hailu M., Sahlu M. and Teklu S. (1985). Beef cattle productioin from tropical pastures : a descriptive bibliography. Addi Ababa: International Livestock Centre for Africa.

MLA

Butterworth M.h, Hailu Michael, Sahlu Marcos and Teklu Sirak. Beef cattle productioin from tropical pastures : a descriptive bibliography. Addi Ababa: International Livestock Centre for Africa. 1985.