Hopper, R. M. (2015). Bovine reproduction. Wiley Blackwell.
芝加哥风格引文Hopper, Richard M. Bovine Reproduction. Chichester, England ; Oxford, England: Wiley Blackwell, 2015.
MLA引文Hopper, Richard M. Bovine Reproduction. Wiley Blackwell, 2015.
警告：这些引文格式不一定是100％准确.