Cite

Principal roads and points of interest in San Diego County.

MLA

City, San Diego, and County Convention Bureau. Principal Roads and Points of Interest in San Diego County. San Diego City and County Convention Bureau, 0AD. https://collections.library.yale.edu/catalog/15821448.

APA, 6th edition

City, S. D., & Bureau, C. C. (0 C.E.). Principal roads and points of interest in San Diego County. [Pictorial maps]. San Diego City and County Convention Bureau, https://collections.library.yale.edu/catalog/15821448.