Cite

Portolan chart of the Mediterranean and Black Seas.

MLA

Villarroel, Domingo, and cartographer. Portolan Chart of the Mediterranean and Black Seas. 0AD. https://collections.library.yale.edu/catalog/16823185.

APA, 6th edition

Villarroel, D., & cartographer. (0 C.E.). Portolan chart of the Mediterranean and Black Seas. [Manuscript maps., Portolan charts.]. https://collections.library.yale.edu/catalog/16823185.