Harbours and islands in the British Channel : engraved to accompany the general chart of R. Adml. Knight, &c. / John Purdy, delint. ; J. Bye sculpt.
MLA
Harbours and Islands in the British Channel : Engraved to Accompany the General Chart of R. Adml. Knight, &c. / John Purdy, Delint. ; J. Bye Sculpt. P. Mason, 1806. https://collections.library.yale.edu/catalog/16664826.
APA, 6th edition
Harbours and islands in the British Channel : engraved to accompany the general chart of R. Adml. Knight, &c. / John Purdy, delint. ; J. Bye sculpt. (1806). [Nautical charts.]. P. Mason, https://collections.library.yale.edu/catalog/16664826.