APA

Mutchler A. J., . (1938). Coleoptera from the Galapagos Islands. New York: American Museum of Natural History.

Chicago

Mutchler Andrew J, . 1938. Coleoptera from the Galapagos Islands. New York: American Museum of Natural History.

Harvard

Mutchler A. J., . (1938). Coleoptera from the Galapagos Islands. New York: American Museum of Natural History.

MLA

Mutchler Andrew J, . Coleoptera from the Galapagos Islands. New York: American Museum of Natural History. 1938.