Cite

Ducatus Turonensis ... Touraine.

MLA

Ducatus Turonensis ... Touraine. G. et J. Blaeuw, 0AD. https://collections.library.yale.edu/catalog/15483993.

APA, 6th edition

Ducatus Turonensis ... Touraine. (0 C.E.). [Maps]. G. et J. Blaeuw, https://collections.library.yale.edu/catalog/15483993.