Cite

A Map of Some of the South and east bounds of Pennsylvania in America ... Sold by John Thornton ... and by John Seller ... London.

MLA

A Map of Some of the South and East Bounds of Pennsylvania in America ... Sold by John Thornton ... and by John Seller ... London. 0AD. https://collections.library.yale.edu/catalog/15790119.

APA, 6th edition

A Map of Some of the South and east bounds of Pennsylvania in America ... Sold by John Thornton ... and by John Seller ... London. (0 C.E.). [Maps]. https://collections.library.yale.edu/catalog/15790119.