Denny's pocket map of San Joaquin County, California : compiled from latest official and private data / by Edward Denny & Co., map publishers.
MLA
Denny, Edward, and Co. Denny's Pocket Map of San Joaquin County, California : Compiled from Latest Official and Private Data / by Edward Denny & Co., Map Publishers. The Company, 0AD. https://collections.library.yale.edu/catalog/15818773.
APA, 6th edition
Denny, E., & C. (0 C.E.). Denny's pocket map of San Joaquin County, California : compiled from latest official and private data / by Edward Denny & Co., map publishers. [Maps]. The Company, https://collections.library.yale.edu/catalog/15818773.