Cite

Ultraiectum dominium [cartographic material].

MLA

Blaeu, Willem Janszoon, 1571-1638. Ultraiectum dominium [cartographic material].. [ca. 1630]. https://collections.library.yale.edu/catalog/2111054.

APA, 6th edition

Blaeu, Willem Janszoon, 1571-1638. ([ca. 1630])[Ultraiectum dominium [cartographic material].]. https://collections.library.yale.edu/catalog/2111054.