Cite

Westphalia Ducatus.

MLA

Westphalia Ducatus. Joannes Janssonius, 0AD. https://collections.library.yale.edu/catalog/15483101.

APA, 6th edition

Westphalia Ducatus. (0 C.E.). [Maps]. Joannes Janssonius, https://collections.library.yale.edu/catalog/15483101.