MLA

Club, National Automobile. Road Map of Southern California : Section 4 / Prepared by Engineering Department, National Automobile Club. The Club, 0AD. https://collections.library.yale.edu/catalog/15821500.

APA, 6th edition

Club, N. A. (0 C.E.). Road map of Southern California : section 4 / prepared by Engineering Department, National Automobile Club. [Maps]. The Club, https://collections.library.yale.edu/catalog/15821500.