एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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