MLA

McNally, Rand, and Company. Road Map of Western United States / Issued by Randall Motor Club, Inc., Affiliated with E. Broox Randall & Sons, Inc. Rand McNally ; 0AD. https://collections.library.yale.edu/catalog/15813000.

APA, 6th edition

McNally, R., & C. (0 C.E.). Road map of western United States / issued by Randall Motor Club, Inc., affiliated with E. Broox Randall & Sons, Inc. [Road maps]. Rand McNally ; https://collections.library.yale.edu/catalog/15813000.