MLA

Sanborn-Perris Map Co., issuing body. Insurance Maps of Stamford, Fairfield Co., Connecticut., Insurance Maps of Stamford, Fairfield Co., Connecticut: [New and Additional Sheets]. 0AD. https://collections.library.yale.edu/catalog/11687445.

APA, 6th edition

Sanborn-Perris Map Co., issuing body. (0 C.E.). Insurance maps of Stamford, Fairfield Co., Connecticut., Insurance maps of Stamford, Fairfield Co., Connecticut: [New and additional sheets]. [Atlases--Connecticut--Stamford--1901, Cadastral maps--Connecticut--Stamford--1901, Fire insurance maps--Connecticut--Stamford--1901]. https://collections.library.yale.edu/catalog/11687445.