MLA

Sanborn-Perris Map Co., issuing body. Insurance Maps of Ansonia, New Haven County, Connecticut. 1895. https://collections.library.yale.edu/catalog/11021546.

APA, 6th edition

Sanborn-Perris Map Co., issuing body. (1895). Insurance maps of Ansonia, New Haven County, Connecticut. [Atlases, Cadastral maps, Connecticut, Fire insurance maps, local]. https://collections.library.yale.edu/catalog/11021546.