Cite

Reconnaissance map of Yukon-Koyukuk region, Alaska / U.S. Geological Survey; Alfred H. Brooks, geologist in charge of division, topography by H.M. Eakin [et al].

MLA

Geological Survey (U.S.). Reconnaissance map of Yukon-Koyukuk region, Alaska / U.S. Geological Survey; Alfred H. Brooks, geologist in charge of division, topography by H.M. Eakin [et al].. BRBL_00634. 1916. https://collections.library.yale.edu/catalog/15821777.

APA, 6th edition

Geological Survey (U.S.). (["BRBL_00634"])(1916)[Reconnaissance map of Yukon-Koyukuk region, Alaska / U.S. Geological Survey; Alfred H. Brooks, geologist in charge of division, topography by H.M. Eakin [et al].]. https://collections.library.yale.edu/catalog/15821777.