Cite

Sabaudia ducatus, Savoye [cartographic material].

MLA

Blaeu, Willem Janszoon, 1571-1638. Sabaudia ducatus, Savoye [cartographic material].. [164-?]. https://collections.library.yale.edu/catalog/2068042.

APA, 6th edition

Blaeu, Willem Janszoon, 1571-1638. ([164-?])[Sabaudia ducatus, Savoye [cartographic material].]. https://collections.library.yale.edu/catalog/2068042.