MLA

National Geographic Society (U.S.). Cartographic Division. Far West / produced by the Cartographic Division, National Geographic Society.. BRBL_00536. 1984. https://collections.library.yale.edu/catalog/15812978.

APA, 6th edition

National Geographic Society (U.S.). Cartographic Division. (["BRBL_00536"])(1984)[Far West / produced by the Cartographic Division, National Geographic Society.]. https://collections.library.yale.edu/catalog/15812978.