MLA

Territorium Abbatiae Heresfeldensis ... G. Blaeu, 0AD. https://collections.library.yale.edu/catalog/15483067.

APA, 6th edition

Territorium Abbatiae Heresfeldensis ... (0 C.E.). [Maps]. G. Blaeu, https://collections.library.yale.edu/catalog/15483067.