MLA

Sanborn Map Company, issuing body. Bethel, Fairfield Co., Conn. 1906. https://collections.library.yale.edu/catalog/11034882.

APA, 6th edition

Sanborn Map Company, issuing body. (1906). Bethel, Fairfield Co., Conn. [Atlases, Bethel, Cadastral maps, Connecticut, Fire insurance maps, local]. https://collections.library.yale.edu/catalog/11034882.