MLA

Mellinger, Johannes, approximately 1538-1603, cartographer. Ducatus Luneburgensis adiacentium[que] regionum delineatio / [cartographic material]. [ca. 1630]. https://collections.library.yale.edu/catalog/2111121.

APA, 6th edition

Mellinger, Johannes, approximately 1538-1603, cartographer. ([ca. 1630])[Ducatus Luneburgensis adiacentium[que] regionum delineatio / [cartographic material]]. https://collections.library.yale.edu/catalog/2111121.