Alaska / produced by the Cartographic Division, National Geographic Society.
MLA
National Geographic Society (U.S.). Cartographic Division. Alaska / produced by the Cartographic Division, National Geographic Society.. BRBL_00631. 1983. https://collections.library.yale.edu/catalog/15821733.
APA, 6th edition
National Geographic Society (U.S.). Cartographic Division. (["BRBL_00631"])(1983)[Alaska / produced by the Cartographic Division, National Geographic Society.]. https://collections.library.yale.edu/catalog/15821733.