APA (7 ম সংস্করণ) উদ্ধৃতি

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

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

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