APA (7e ed.) Bronvermelding

Beeby, A., & Brennan, A. (2004). First ecology (2nd ed.). Oxford University Press.

Chicago (17e ed.) Bronvermelding

Beeby, Alan, en Anne-Maria Brennan. First Ecology. 2nd ed. Oxford: Oxford University Press, 2004.

MLA (8e ed.) Bronvermelding

Beeby, Alan, en Anne-Maria Brennan. First Ecology. 2nd ed. Oxford University Press, 2004.