MLA

Sanborn Map Company, issuing body. Stonington, New London County, Connecticut. 1925. https://collections.library.yale.edu/catalog/11633953.

APA, 6th edition

Sanborn Map Company, issuing body. (1925). Stonington, New London County, Connecticut. [Atlases--Connecticut--North Stonington--1925, Atlases--Connecticut--Stonington--1925, Cadastral maps--Connecticut--North Stonington--1925, Cadastral maps--Connecticut--Stonington--1925, Fire insurance maps--Connecticut--North Stonington--1925, Fire insurance maps--Connecticut--Stonington--1925]. https://collections.library.yale.edu/catalog/11633953.