APA

Detwyler T. R., . (1971). Man's impact on environment. New York: McGraw-Hill.

Chicago

Detwyler Thomas R, . 1971. Man's impact on environment. New York: McGraw-Hill.

Harvard

Detwyler T. R., . (1971). Man's impact on environment. New York: McGraw-Hill.

MLA

Detwyler Thomas R, . Man's impact on environment. New York: McGraw-Hill. 1971.