APA (7e ed.) Bronvermelding
Petersen, W., & Gregory R.W. (1939). Dairy science: Its principles and practice in production, management, and processing. J.B.L.
Chicago (17e ed.) Bronvermelding
Petersen, W.E, en Gregory R.W. Dairy Science: Its Principles and Practice in Production, Management, and Processing. Chicago: J.B.L, 1939.
MLA (9e ed.) Bronvermelding
Petersen, W.E, en Gregory R.W. Dairy Science: Its Principles and Practice in Production, Management, and Processing. J.B.L, 1939.
Let op: Deze citaties zijn niet altijd 100% accuraat.