Map of Alaska / compiled from maps of the U.S. Geological Survey, Alaska Road Commission, and from other data by Alaska Bureau Seattle Chamber of Commerce and Commerical Club 1920.
MLA
Map of Alaska / Compiled from Maps of the U.S. Geological Survey, Alaska Road Commission, and from Other Data by Alaska Bureau Seattle Chamber of Commerce and Commerical Club 1920. s.n. , 1920. https://collections.library.yale.edu/catalog/15821790.
APA, 6th edition
Map of Alaska / compiled from maps of the U.S. Geological Survey, Alaska Road Commission, and from other data by Alaska Bureau Seattle Chamber of Commerce and Commerical Club 1920. (1920). [Maps]. s.n. , https://collections.library.yale.edu/catalog/15821790.