Cite

Topographic map of Chandalar-Sheenjek region, Alaska.

MLA

Topographic Map of Chandalar-Sheenjek Region, Alaska. U.S.G.S. , 1929. https://collections.library.yale.edu/catalog/15821739.

APA, 6th edition

Topographic map of Chandalar-Sheenjek region, Alaska. (1929). [Maps]. U.S.G.S. , https://collections.library.yale.edu/catalog/15821739.