APA (7th ed.) Citation

Krebs, J. R., & Davies, N. B. (1981). An introduction to behavioural ecology. Sinauer Associates.

Chicago Style (17th ed.) Citation

Krebs, J. R., and N. B. Davies. An Introduction to Behavioural Ecology. Sunderland, Mass.: Sinauer Associates, 1981.

MLA (9th ed.) Citation

Krebs, J. R., and N. B. Davies. An Introduction to Behavioural Ecology. Sinauer Associates, 1981.