Cite

Topographic map of Kotsina-Kuskulana District, Copper River region, Alaska.

MLA

Geological Survey (U.S.). Topographic map of Kotsina-Kuskulana District, Copper River region, Alaska.. BRBL_00633. 1922. https://collections.library.yale.edu/catalog/15821756.

APA, 6th edition

Geological Survey (U.S.). (["BRBL_00633"])(1922)[Topographic map of Kotsina-Kuskulana District, Copper River region, Alaska.]. https://collections.library.yale.edu/catalog/15821756.