Purves, W. K., & Orians,Gordon H. (1987). Life: The science of biology (2nd ed.). Sinauer.
芝加哥风格引文Purves, William K., 与 Orians,Gordon H. Life: The Science of Biology. 2nd ed. Massachusetts: Sinauer, 1987.
MLA引文Purves, William K., 与 Orians,Gordon H. Life: The Science of Biology. 2nd ed. Sinauer, 1987.
警告：这些引文格式不一定是100％准确.