Cite

Umbria overo Ducato di Spoleto.

MLA

Umbria Overo Ducato Di Spoleto. [Blaeu], 0AD. https://collections.library.yale.edu/catalog/15824457.

APA, 6th edition

Umbria overo Ducato di Spoleto. (0 C.E.). [Maps]. [Blaeu], https://collections.library.yale.edu/catalog/15824457.