MLA

Visscher, Nicolaes, 1649-1702. Comitatus Namurci / [cartographic material] / emendata delineatio nuperrime in lucem edita per Nicolaum Visscher. ca. 1684. https://collections.library.yale.edu/catalog/2065681.

APA, 6th edition

Visscher, Nicolaes, 1649-1702. (ca. 1684)[Comitatus Namurci / [cartographic material] / emendata delineatio nuperrime in lucem edita per Nicolaum Visscher]. https://collections.library.yale.edu/catalog/2065681.