APA (7th ed.) Citation

Krebs, J. R., & Davies, N. B. (1987). An introduction to behavioural ecology (2nd ed.). Blackwell Scientific Publications.

Chicago Style (17th ed.) Citation

Krebs, J. R., and N. B. Davies. An Introduction to Behavioural Ecology. 2nd ed. Boston: Blackwell Scientific Publications, 1987.

MLA (9th ed.) Citation

Krebs, J. R., and N. B. Davies. An Introduction to Behavioural Ecology. 2nd ed. Blackwell Scientific Publications, 1987.