MLA

Sanborn-Perris Map Co., issuing body. Berlin, Hartford Co., Conn. 1901. https://collections.library.yale.edu/catalog/11021558.

APA, 6th edition

Sanborn-Perris Map Co., issuing body. (1901). Berlin, Hartford Co., Conn. [Atlases, Berlin, Cadastral maps, Connecticut, Fire insurance maps, local]. https://collections.library.yale.edu/catalog/11021558.