Cite

Jane Bickerton, Duchess of Norfolk from a drawing in the collection at Strawberry Hill, Twickenham / [art original]

MLA

Harding, G. P. (George Perfect), 1780-1853, artist. Jane Bickerton, Duchess of Norfolk from a drawing in the collection at Strawberry Hill, Twickenham / [art original]. [between 1807 and 1812?]. https://collections.library.yale.edu/catalog/11134618.

APA, 6th edition

Harding, G. P. (George Perfect), 1780-1853, artist. ([between 1807 and 1812?])[Jane Bickerton, Duchess of Norfolk from a drawing in the collection at Strawberry Hill, Twickenham / [art original]]. https://collections.library.yale.edu/catalog/11134618.