Etgen, W. M., & Reaves, P. M. (1978). Dairy cattle feeding and management (6th ed.). Wiley.
芝加哥风格引文Etgen, William M., 与 Paul M. Reaves. Dairy Cattle Feeding and Management. 6th ed. New York: Wiley, 1978.
MLA引文Etgen, William M., 与 Paul M. Reaves. Dairy Cattle Feeding and Management. 6th ed. Wiley, 1978.
警告：这些引文格式不一定是100％准确.