Cite

Ducatus Holsatiae nova tabula [cartographic material].

MLA

Blaeu, Willem Janszoon, 1571-1638. Ducatus Holsatiae nova tabula [cartographic material].. [ca. 1630]. https://collections.library.yale.edu/catalog/2111066.

APA, 6th edition

Blaeu, Willem Janszoon, 1571-1638. ([ca. 1630])[Ducatus Holsatiae nova tabula [cartographic material].]. https://collections.library.yale.edu/catalog/2111066.