Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (8th εκδ.)

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