MLA

Wyld, James, 1812-1887. Map of the southern states of North America with the forts, harbours & military positions James Wyld, Geographer to the Queen.. BRBL_00416. [1862?]. https://collections.library.yale.edu/catalog/15603949.

APA, 6th edition

Wyld, James, 1812-1887. (["BRBL_00416"])([1862?])[Map of the southern states of North America with the forts, harbours & military positions James Wyld, Geographer to the Queen.]. https://collections.library.yale.edu/catalog/15603949.