MLA

Sanborn Map Company, issuing body. Thompsonville, Hartford County, Connecticut. 1905. https://collections.library.yale.edu/catalog/11672639.

APA, 6th edition

Sanborn Map Company, issuing body. (1905). Thompsonville, Hartford County, Connecticut. [Atlases--Connecticut--Thompsonville--1905, Cadastral maps--Connecticut--Thompsonville--1905, Fire insurance maps--Connecticut--Thompsonville--1905]. https://collections.library.yale.edu/catalog/11672639.