APA (7th ed.) Citation

Durrell, G., Durrell, L., Black, D., & Wilkinson, P. (1988). The amateur naturalist. Knopf.

Chicago Style (17th ed.) Citation

Durrell, Gerald, Lee Durrell, David Black, and Phil Wilkinson. The Amateur Naturalist. New York: Knopf, 1988.

MLA (9th ed.) Citation

Durrell, Gerald, et al. The Amateur Naturalist. Knopf, 1988.