Παραπομπή σε μορφή APA (7η εκδ.)

Withgott, J., & Brennan, S. R. (2007). Essential environment: The science behind the stories (2nd ed.). Pearson Benjamin Cummings.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Withgott, Jay, και Scott R. Brennan. Essential Environment: The Science Behind the Stories. 2nd ed. San Francisco: Pearson Benjamin Cummings, 2007.

Παραπομπή σε μορφή MLA (9th εκδ.)

Withgott, Jay, και Scott R. Brennan. Essential Environment: The Science Behind the Stories. 2nd ed. Pearson Benjamin Cummings, 2007.