Letter : Houghton, to Mr. John Boydell, Cheapside, London, 1773 October 4.
MLA
Farington, Joseph, 1747-1821. Letter : Houghton, to Mr. John Boydell, Cheapside, London, 1773 October 4.. https://collections.library.yale.edu/catalog/16710525.
APA, 6th edition
Farington, Joseph, 1747-1821. [Letter : Houghton, to Mr. John Boydell, Cheapside, London, 1773 October 4.]. https://collections.library.yale.edu/catalog/16710525.