Cite

Petrocorium comitatus vulgo la comtée de Périgort [cartographic material].

MLA

Blaeu, Joan, 1596-1673. Petrocorium comitatus vulgo la comtée de Périgort [cartographic material].. 1662]. https://collections.library.yale.edu/catalog/15487184.

APA, 6th edition

Blaeu, Joan, 1596-1673. (1662])[Petrocorium comitatus vulgo la comtée de Périgort [cartographic material].]. https://collections.library.yale.edu/catalog/15487184.