Cite

Borbonium ducatus. Bourbonnois.

MLA

Borbonium Ducatus. Bourbonnois. G. et J. Blaeuw, 0AD. https://collections.library.yale.edu/catalog/15483998.

APA, 6th edition

Borbonium ducatus. Bourbonnois. (0 C.E.). [Maps]. G. et J. Blaeuw, https://collections.library.yale.edu/catalog/15483998.