Cite

A new and correct map of England and Wales now called South Britain ...

MLA

A New and Correct Map of England and Wales Now Called South Britain ... Henry Overton, 0AD. https://collections.library.yale.edu/catalog/15259752.

APA, 6th edition

A new and correct map of England and Wales now called South Britain ... (0 C.E.). [Maps]. Henry Overton, https://collections.library.yale.edu/catalog/15259752.