Close-up, Canada, Saskatchewan and Manitoba / produced by the Cartographic Division, National Geographic Society ; Richard J. Darley, chief cartographer ; John F. Shupe, associate chief cartographer.
MLA
National Geographic Society (U.S.). Cartographic Division. Close-up, Canada, Saskatchewan and Manitoba / produced by the Cartographic Division, National Geographic Society ; Richard J. Darley, chief cartographer ; John F. Shupe, associate chief cartographer.. BRBL_00387. 1979. https://collections.library.yale.edu/catalog/15536085.
APA, 6th edition
National Geographic Society (U.S.). Cartographic Division. (["BRBL_00387"])(1979)[Close-up, Canada, Saskatchewan and Manitoba / produced by the Cartographic Division, National Geographic Society ; Richard J. Darley, chief cartographer ; John F. Shupe, associate chief cartographer.]. https://collections.library.yale.edu/catalog/15536085.