Παραπομπή σε μορφή APA (7η εκδ.)

Freedman, B. (1995). Environmental ecology: The ecological effects of pollution, distrurbance, and other stresses (2nd ed.). Academic Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Freedman, Bill. Environmental Ecology: The Ecological Effects of Pollution, Distrurbance, and Other Stresses. 2nd ed. San Diego: Academic Press, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Freedman, Bill. Environmental Ecology: The Ecological Effects of Pollution, Distrurbance, and Other Stresses. 2nd ed. Academic Press, 1995.