Etgen, W. M., & Reaves, P. M. (1978). Dairy cattle feeding and management (6th ed.). Wiley.
Lua i Stíl Chicago (17ú heag.)Etgen, William M., agus Paul M. Reaves. Dairy Cattle Feeding and Management. 6th ed. New York: Wiley, 1978.
Lua MLA (9ú heag.)Etgen, William M., agus Paul M. Reaves. Dairy Cattle Feeding and Management. 6th ed. Wiley, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.