MLA

Map, Sanborn, and issuing body Publishing Co. Bridgeport, Conn. 1884. https://collections.library.yale.edu/catalog/11037153.

APA, 6th edition

Map, S., & Publishing Co., issuing body. (1884). Bridgeport, Conn. [Atlases, Bridgeport, Cadastral maps, Connecticut, Fire insurance maps, local]. https://collections.library.yale.edu/catalog/11037153.