Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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