Dyfyniad APA

Detwyler, T. R. (1971). Man's impact on environment. McGraw-Hill Book Company.

Dyfyniad Arddull Chicago

Detwyler, Thomas R. Man's Impact on Environment. New York: McGraw-Hill Book Company, 1971.

Dyfyniad MLA

Detwyler, Thomas R. Man's Impact on Environment. McGraw-Hill Book Company, 1971.

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