MLA

Gussefeld, F. L. (Franz Ludwig), 1744-1807, Homann Erben (Firm). Tabula regni Borussiae, Borussiam orientalem exhibens [cartographic material] / F.L. Guessefeld, C. P. S. C. M. 1775. https://collections.library.yale.edu/catalog/2065592.

APA, 6th edition

Gussefeld, F. L. (Franz Ludwig), 1744-1807, & Homann Erben (Firm). (1775)[Tabula regni Borussiae, Borussiam orientalem exhibens [cartographic material] / F.L. Guessefeld, C. P. S. C. M]. https://collections.library.yale.edu/catalog/2065592.