APA (7th ed.) Zitazioa

Beeby, A., & Brennan, A. (2008). First ecology: Ecological principles and environmental issues (3rd ed.). Oxford University Press.

Chicago Style (17th ed.) Zitazioa

Beeby, Alan, eta Anne-Maria Brennan. First Ecology: Ecological Principles and Environmental Issues. 3rd ed. Oxford: Oxford University Press, 2008.

MLA (9th ed.) Zitazioa

Beeby, Alan, eta Anne-Maria Brennan. First Ecology: Ecological Principles and Environmental Issues. 3rd ed. Oxford University Press, 2008.