(U.S.), N. G. S. (1914). The National Geographic Magazine Map of Alaska: Showing latest explorations by U.S. Geological Survey and U.S. Coast and Geodetic Survey. National Geographic Society.
Chicago Style (17th ed.) Citation(U.S.), National Geographic Society. The National Geographic Magazine Map of Alaska: Showing Latest Explorations by U.S. Geological Survey and U.S. Coast and Geodetic Survey. National Geographic Society, 1914.
MLA (9th ed.) Citation(U.S.), National Geographic Society. The National Geographic Magazine Map of Alaska: Showing Latest Explorations by U.S. Geological Survey and U.S. Coast and Geodetic Survey. National Geographic Society, 1914.
Warning: These citations may not always be 100% accurate.