APA-referens (7:e uppl.)

Yapp, W. W., & Nevens, W. B. (1955). Dairy cattle: Selection, feeding and management (4th ed.). Wiley.

Chicago-referens (17:e uppl.)

Yapp, William Wodin, och W. B. Nevens. Dairy Cattle: Selection, Feeding and Management. 4th ed. New York: Wiley, 1955.

MLA-referens (8:e uppl.)

Yapp, William Wodin, och W. B. Nevens. Dairy Cattle: Selection, Feeding and Management. 4th ed. Wiley, 1955.