APA (7th ed.) Citation

Purves, W. K., Orians, G. H., & Heller, H. C. (1995). Life, the science of biology (4th ed.). Sinauer.

Chicago Style (17th ed.) Citation

Purves, William K., Gordon H. Orians, and H. Craig Heller. Life, the Science of Biology. 4th ed. Sunderland: Sinauer, 1995.

MLA (9th ed.) Citation

Purves, William K., et al. Life, the Science of Biology. 4th ed. Sinauer, 1995.