APA (7th ed.) Citation

Geological Survey (U.S.), Johnson, B. R., & Karl, S. M. (1985). Geologic map of western Chichagof and Yakobi Islands, southeastern Alaska. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Bruce R. Johnson, and Susan M. Karl. Geologic Map of Western Chichagof and Yakobi Islands, Southeastern Alaska. Reston, Va.: The Survey, 1985.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of Western Chichagof and Yakobi Islands, Southeastern Alaska. The Survey, 1985.