MLA

Sanborn-Perris Map Co., issuing body. Sandy Hook, Fairfield Co., Conn. 1901. https://collections.library.yale.edu/catalog/11605574.

APA, 6th edition

Sanborn-Perris Map Co., issuing body. (1901). Sandy Hook, Fairfield Co., Conn. [Atlases--Connecticut--Newtown--Sandy Hook--1901, Cadastral maps--Connecticut--Newtown--Sandy Hook--1901, Fire insurance maps--Connecticut--Newtown--Sandy Hook--1901]. https://collections.library.yale.edu/catalog/11605574.