Cite

The Continent and Islands of Africa ... Delineated by John Purdy.

MLA

The Continent and Islands of Africa ... Delineated by John Purdy. Robert Laurie and James Whittle, 1809. https://collections.library.yale.edu/catalog/15512980.

APA, 6th edition

The Continent and Islands of Africa ... Delineated by John Purdy. (1809). [Maps]. Robert Laurie and James Whittle, https://collections.library.yale.edu/catalog/15512980.