Gaya APA

Preston,T.R., ., Leng,R.A., . (1987). Matching ruminant production systems with available resources in the tropics and sub-tropics . Australa: Penambul Books.

Gaya MLA

Preston,T.R., ., Leng,R.A., . "Matching ruminant production systems with available resources in the tropics and sub-tropics". Australa: Penambul Books, 1987. Textbook.