MLA

of Southern California, Automobile Club. San Bernardino Mountain Area. Automobile Club of Southern California, 0AD. https://collections.library.yale.edu/catalog/15821526.

APA, 6th edition

of Southern California, A. C. (0 C.E.). San Bernardino mountain area. [Maps]. Automobile Club of Southern California, https://collections.library.yale.edu/catalog/15821526.