Colchester, New London Co., Conn.
MLA
Sanborn-Perris Map Co., issuing body. Colchester, New London Co., Conn. 0AD. https://collections.library.yale.edu/catalog/16044027.
APA, 6th edition
Sanborn-Perris Map Co., issuing body. (0 C.E.). Colchester, New London Co., Conn. [Atlases., Cadastral maps., Fire insurance maps.]. https://collections.library.yale.edu/catalog/16044027.