MLA

Portolano for the Western Mediterranean. 0AD. https://collections.library.yale.edu/catalog/16823429.

APA, 6th edition

Portolano for the western Mediterranean. (0 C.E.). [Early works to 1800, Manuscripts, Medieval Italy 16th century, Manuscripts, Renaissance Italy 16th century, Portolan charts Italy 16th century, Portolanos Italy 16th century, Medieval and Renaissance Manuscripts in Beinecke Library]. https://collections.library.yale.edu/catalog/16823429.