Enger, E. D., & Kormelink, J. R. (1991). Concepts in biology (6th ed.). WCB.
芝加哥风格引文Enger, Eldon D., 与 J. Richard Kormelink. Concepts in Biology. 6th ed. Boulevard: WCB, 1991.
MLA引文Enger, Eldon D., 与 J. Richard Kormelink. Concepts in Biology. 6th ed. WCB, 1991.
警告：这些引文格式不一定是100％准确.