APA (7th ed.) Citation

Geological Survey (U.S.). (1938). Nushagak district, Alaska. [s.n.].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Nushagak District, Alaska. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

Geological Survey (U.S.). Nushagak District, Alaska. [s.n.], 1938.

Warning: These citations may not always be 100% accurate.