APA

Benton A. H., Wermer W. E., . (1974). Field biology and ecology. New York: Mc Graw-Hill.

Chicago

Benton Allen H, Wermer William E, . 1974. Field biology and ecology. New York: Mc Graw-Hill.

Harvard

Benton A. H., Wermer W. E., . (1974). Field biology and ecology. New York: Mc Graw-Hill.

MLA

Benton Allen H, Wermer William E, . Field biology and ecology. New York: Mc Graw-Hill. 1974.