Cite

Tetrarchia ducatus Gelriae Arnhemiensis sive Velavia.

MLA

Tetrarchia Ducatus Gelriae Arnhemiensis Sive Velavia. 0AD. https://collections.library.yale.edu/catalog/15352249.

APA, 6th edition

Tetrarchia ducatus Gelriae Arnhemiensis sive Velavia. (0 C.E.). [Maps]. https://collections.library.yale.edu/catalog/15352249.