APA

(19). Geologic studies on the Alaska Peninsula. Washington, DC: U.S. Government Print. Office.

Chicago

19. Geologic studies on the Alaska Peninsula. Washington, DC: U.S. Government Print. Office.

Harvard

(19). Geologic studies on the Alaska Peninsula. Washington, DC: U.S. Government Print. Office.

MLA

Geologic studies on the Alaska Peninsula. Washington, DC: U.S. Government Print. Office. 19.