Hammond's road map of northern New Jersey / C.S. Hammond & Company.
MLA
Hammond, C. S., and Company. Hammond's Road Map of Northern New Jersey / C.S. Hammond & Company. C.S. Hammond & Co., 0AD. https://collections.library.yale.edu/catalog/15827660.
APA, 6th edition
Hammond, C. S., & C. (0 C.E.). Hammond's road map of northern New Jersey / C.S. Hammond & Company. [Maps]. C.S. Hammond & Co., https://collections.library.yale.edu/catalog/15827660.