APA (7th ed.) Citation

Purves, W. K., & Orians,Gordon H. (1987). Life: The science of biology (2nd ed.). Sinauer.

Chicago Style (17th ed.) Citation

Purves, William K., and Orians,Gordon H. Life: The Science of Biology. 2nd ed. Massachusetts: Sinauer, 1987.

MLA (9th ed.) Citation

Purves, William K., and Orians,Gordon H. Life: The Science of Biology. 2nd ed. Sinauer, 1987.

Warning: These citations may not always be 100% accurate.