MLA

Farmer, Silas, and Co. Guide Map of the City of Detroit / Drawn by Eugene Robinson, City Surveyor ; Lith. by Ed Mendel. Published by S. Farmer & Co., 0AD. https://collections.library.yale.edu/catalog/15814494.

APA, 6th edition

Farmer, S., & C. (0 C.E.). Guide map of the city of Detroit / drawn by Eugene Robinson, city surveyor ; lith. by Ed Mendel. [Maps.]. Published by S. Farmer & Co., https://collections.library.yale.edu/catalog/15814494.