Gronefeld, G. (1965). Understanding animals. Heinemann.
芝加哥风格引文Gronefeld, Gerhard. Understanding Animals. London: Heinemann, 1965.
MLA引文Gronefeld, Gerhard. Understanding Animals. Heinemann, 1965.
警告：这些引文格式不一定是100％准确.
APA引文