Kraus, D., & Perkins, O. E. (1974). Concepts in modern biology. Cambridge Book.
芝加哥风格引文Kraus, David, 与 Otho E. Perkins. Concepts in Modern Biology. New York: Cambridge Book, 1974.
MLA引文Kraus, David, 与 Otho E. Perkins. Concepts in Modern Biology. Cambridge Book, 1974.
警告：这些引文格式不一定是100％准确.