APA (7th ed.) Citation

Krebs, J. R., & Davies, N. B. (1993). An Introduction to Behavioural Ecology (3rd ed.). Blackwell Scientific Publications.

Chicago Style (17th ed.) Citation

Krebs, J. R., and N. B. Davies. An Introduction to Behavioural Ecology. 3rd ed. Oxford [England] ; Cambridge, MA: Blackwell Scientific Publications, 1993.

MLA (9th ed.) Citation

Krebs, J. R., and N. B. Davies. An Introduction to Behavioural Ecology. 3rd ed. Blackwell Scientific Publications, 1993.