Não informado. Animal Sciences and Industry Research Report. Oklahoma Agricultural Experiment Station.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Animal Sciences and Industry Research Report. Stillwater, Okla: Oklahoma Agricultural Experiment Station.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Animal Sciences and Industry Research Report. Oklahoma Agricultural Experiment Station.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.