Cite

[Mapamundi of 1538] [cartographic material].

MLA

Mercator, Gerhard, 1512-1594, cartographer. [Mapamundi of 1538] [cartographic material].. [19--]. https://collections.library.yale.edu/catalog/15234074.

APA, 6th edition

Mercator, Gerhard, 1512-1594, cartographer. ([19--])[[Mapamundi of 1538] [cartographic material].]. https://collections.library.yale.edu/catalog/15234074.