APA (7th ed.) Zitazioa
Petersen, W., & Gregory R.W. (1939). Dairy science: Its principles and practice in production, management, and processing. J.B.L.
Chicago Style (17th ed.) Zitazioa
Petersen, W.E, eta Gregory R.W. Dairy Science: Its Principles and Practice in Production, Management, and Processing. Chicago: J.B.L, 1939.
MLA (9th ed.) Zitazioa
Petersen, W.E, eta Gregory R.W. Dairy Science: Its Principles and Practice in Production, Management, and Processing. J.B.L, 1939.
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