MLA

Sotzmann, D. F. Rhode Island. Bey Carl Ernst Bohn, 1797. https://collections.library.yale.edu/catalog/10563617.

APA, 6th edition

Sotzmann, D. F. (1797). Rhode Island [Maps, Early works to 1800]. Bey Carl Ernst Bohn. https://collections.library.yale.edu/catalog/10563617.