MLA

Schenk, Peter, 1661-1711. Dania regnum ducatus Holsatia et Slesvicum insulae Danicae et provinciae Iutia Scania etc. / [cartographic material]. 1706.. https://collections.library.yale.edu/catalog/16618331.

APA, 6th edition

Schenk, Peter, 1661-1711. (1706.)[Dania regnum ducatus Holsatia et Slesvicum insulae Danicae et provinciae Iutia Scania etc. / [cartographic material]]. https://collections.library.yale.edu/catalog/16618331.