MLA

National Geographic Society (U.S.). Cartographic Division. Texas / produced by the Cartographic Division, National Geographic Society.. BRBL_00526. 1986. https://collections.library.yale.edu/catalog/15811515.

APA, 6th edition

National Geographic Society (U.S.). Cartographic Division. (["BRBL_00526"])(1986)[Texas / produced by the Cartographic Division, National Geographic Society.]. https://collections.library.yale.edu/catalog/15811515.