MLA

of Southern California, Automobile Club. Automobile Road Map of Metropolitan Los Angeles / Compiled and Copyright by the Automobile Club of Southern California. Automobile Club of Southern California, 0AD. https://collections.library.yale.edu/catalog/15821509.

APA, 6th edition

of Southern California, A. C. (0 C.E.). Automobile road map of metropolitan Los Angeles / compiled and copyright by the Automobile Club of Southern California. [Maps]. Automobile Club of Southern California, https://collections.library.yale.edu/catalog/15821509.