MLA

Schenk, Peter, 1661-1711. Tabula nova atque exacta Westphaliae finitimas quoque ditiones prafecturas et satrapias [cartographic material]. ca. 1700?]. https://collections.library.yale.edu/catalog/16618360.

APA, 6th edition

Schenk, Peter, 1661-1711. (ca. 1700?])[Tabula nova atque exacta Westphaliae finitimas quoque ditiones prafecturas et satrapias [cartographic material]]. https://collections.library.yale.edu/catalog/16618360.