Não informado. (1971). South African journal of animal science. South African Society of Animal Production.
Chicago-Zitierstil (17. Ausg.)Não informado. South African Journal of Animal Science. Pretoria, Africa do Sul: South African Society of Animal Production, 1971.
MLA-Zitierstil (8. Ausg.)Não informado. South African Journal of Animal Science. South African Society of Animal Production, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.