Cite

Map of the city of Detroit, Michigan.

MLA

Map of the City of Detroit, Michigan. [Sauer Bros.?], 0AD. https://collections.library.yale.edu/catalog/16372761.

APA, 6th edition

Map of the city of Detroit, Michigan. (0 C.E.). [Maps.]. [Sauer Bros.?], https://collections.library.yale.edu/catalog/16372761.