MLA

Snow, J. C. Automobile Road Map of the Indian Country : Embracing Portions of Arizona, New Mexico, Utah, and Colorado / J.C. Snow + F.M.B. Automobile Club of Southern California, 0AD. https://collections.library.yale.edu/catalog/15811217.

APA, 6th edition

Snow, J. C. (0 C.E.). Automobile road map of the Indian country : embracing portions of Arizona, New Mexico, Utah, and Colorado / J.C. Snow + F.M.B. [Maps]. Automobile Club of Southern California, https://collections.library.yale.edu/catalog/15811217.