MLA

General Drafting Company, inc. Magnolia Road Map of Arkansas and Louisiana / General Drafting Co. Inc. Magnolia Petroleum Company, 0AD. https://collections.library.yale.edu/catalog/15814707.

APA, 6th edition

General Drafting Company, inc. (0 C.E.). Magnolia road map of Arkansas and Louisiana / General Drafting Co. Inc. [Road maps]. Magnolia Petroleum Company, https://collections.library.yale.edu/catalog/15814707.