Krogh, D. (2002). Biology: A guide to the natural world (2nd ed.). Prentice Hall.
芝加哥风格引文Krogh, David. Biology: A Guide to the Natural World. 2nd ed. Upper Saddle Riever, New Jersey: Prentice Hall, 2002.
MLA引文Krogh, David. Biology: A Guide to the Natural World. 2nd ed. Prentice Hall, 2002.
警告：这些引文格式不一定是100％准确.