APA (7th ed.) Citation

(1990). Geologic studies in Alaska by the U.S. Geological Survey, 1989.

Chicago Style (17th ed.) Citation

Geologic Studies in Alaska by the U.S. Geological Survey, 1989. Denver, Co, 1990.

MLA (9th ed.) Citation

Geologic Studies in Alaska by the U.S. Geological Survey, 1989. 1990.

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