MLA

Sanborn Map Company, issuing body. Ansonia, New Haven Co., Connecticut. 1924. https://collections.library.yale.edu/catalog/11034849.

APA, 6th edition

Sanborn Map Company, issuing body. (1924). Ansonia, New Haven Co., Connecticut. [Atlases, Cadastral maps, Connecticut, Fire insurance maps, local, New York, New York (State)]. https://collections.library.yale.edu/catalog/11034849.