MLA

Homann, Johann Baptist, 1663-1724. Tabula generalis Holsatiae complectens Holsatiae, Dithmarsiae, Stormariae, et Vagriae Ducatus. 1720?]. https://collections.library.yale.edu/catalog/10563636.

APA, 6th edition

Homann, Johann Baptist, 1663-1724. (1720?])[Tabula generalis Holsatiae complectens Holsatiae, Dithmarsiae, Stormariae, et Vagriae Ducatus]. https://collections.library.yale.edu/catalog/10563636.