Cite

Map of Alaska : showing latest explorations by U.S. Geological Survey and U.S. Coast and Geodetic Survey.

MLA

National Geographic Society (U.S.). Cartographic Division. Map of Alaska : showing latest explorations by U.S. Geological Survey and U.S. Coast and Geodetic Survey.. BRBL_00631. 1914. https://collections.library.yale.edu/catalog/15821725.

APA, 6th edition

National Geographic Society (U.S.). Cartographic Division. (["BRBL_00631"])(1914)[Map of Alaska : showing latest explorations by U.S. Geological Survey and U.S. Coast and Geodetic Survey.]. https://collections.library.yale.edu/catalog/15821725.