Παραπομπή σε μορφή APA (7η εκδ.)

Harper, C. L. (2008). Environment and society: Human perspectives on environmental issues (4th ed.). Pearson/Prentice Hall.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Harper, Charles L. Environment and Society: Human Perspectives on Environmental Issues. 4th ed. Upper Saddle River, N.J.: Pearson/Prentice Hall, 2008.

Παραπομπή σε μορφή MLA (9th εκδ.)

Harper, Charles L. Environment and Society: Human Perspectives on Environmental Issues. 4th ed. Pearson/Prentice Hall, 2008.