Geological Survey (U.S.) & Case, J. E. (1981). Maps showing aeromagnetic survey and geologic interpretation of the Chignik and Sutwik Island quadrangles, Alaska. The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and James E. Case. Maps Showing Aeromagnetic Survey and Geologic Interpretation of the Chignik and Sutwik Island Quadrangles, Alaska. Reston, Va.: The Survey, 1981.
MLA (9th ed.) CitationGeological Survey (U.S.) and James E. Case. Maps Showing Aeromagnetic Survey and Geologic Interpretation of the Chignik and Sutwik Island Quadrangles, Alaska. The Survey, 1981.
Warning: These citations may not always be 100% accurate.