Citazione Stile APA (7a Edizione)

Etgen, W. M., & Reaves, P. M. (1978). Dairy cattle feeding and management (6th ed.). Wiley.

Citazione stile Chigago Style (17a edizione)

Etgen, William M., e Paul M. Reaves. Dairy Cattle Feeding and Management. 6th ed. New York: Wiley, 1978.

Citatione MLA (9a ed.)

Etgen, William M., e Paul M. Reaves. Dairy Cattle Feeding and Management. 6th ed. Wiley, 1978.