Cite

Reconnaissance map of Rampart quadrangle, Yukon-Tanana region, Alaska / U.S. Geological Survey ; Alfred H. Brooks, geologist in charge.

MLA

Geological Survey (U.S.). Reconnaissance map of Rampart quadrangle, Yukon-Tanana region, Alaska / U.S. Geological Survey ; Alfred H. Brooks, geologist in charge.. BRBL_00634. 1909. https://collections.library.yale.edu/catalog/15821765.

APA, 6th edition

Geological Survey (U.S.). (["BRBL_00634"])(1909)[Reconnaissance map of Rampart quadrangle, Yukon-Tanana region, Alaska / U.S. Geological Survey ; Alfred H. Brooks, geologist in charge.]. https://collections.library.yale.edu/catalog/15821765.