Map of Massachusetts, Rhode Island and Connecticut.
MLA
Map of Massachusetts, Rhode Island and Connecticut. Ensings & Tayer, 1848. https://collections.library.yale.edu/catalog/15606954.
APA, 6th edition
Map of Massachusetts, Rhode Island and Connecticut. (1848). [Maps]. Ensings & Tayer, https://collections.library.yale.edu/catalog/15606954.