Citazione Stile APA (7a Edizione)

Harper, C. L. (2004). Environment and society: Human perspectives on environmental issues (Third edition.). Pearson/Prentice Hall.

Citazione stile Chigago Style (17a edizione)

Harper, Charles L. Environment and Society: Human Perspectives on Environmental Issues. Third edition. Upper Saddle River, New Jersey: Pearson/Prentice Hall, 2004.

Citatione MLA (9a ed.)

Harper, Charles L. Environment and Society: Human Perspectives on Environmental Issues. Third edition. Pearson/Prentice Hall, 2004.