Northwestern United States and neighboring Canadian provinces / compiled and drawn in the Cartographic Section of the National Geographic Society for the National geographic magazine ; James M. Darley, chief cartographer.
MLA
National Geographic Society (U.S.). Cartographic Section. Northwestern United States and neighboring Canadian provinces / compiled and drawn in the Cartographic Section of the National Geographic Society for the National geographic magazine ; James M. Darley, chief cartographer.. BRBL_00536. 1950. https://collections.library.yale.edu/catalog/15812977.
APA, 6th edition
National Geographic Society (U.S.). Cartographic Section. (["BRBL_00536"])(1950)[Northwestern United States and neighboring Canadian provinces / compiled and drawn in the Cartographic Section of the National Geographic Society for the National geographic magazine ; James M. Darley, chief cartographer.]. https://collections.library.yale.edu/catalog/15812977.
