Marca d'Ancona olim Picenum.
MLA
Marca d'Ancona Olim Picenum. [Blaeu], 0AD. https://collections.library.yale.edu/catalog/15824459.
APA, 6th edition
Marca d'Ancona olim Picenum. (0 C.E.). [Maps]. [Blaeu], https://collections.library.yale.edu/catalog/15824459.