Cite

The Countess of Suffolk's house at Twickenham [drawing]

MLA

Heckel, Augustin, approximately 1690-1770, artist. The Countess of Suffolk's house at Twickenham [drawing]. [1748]. https://collections.library.yale.edu/catalog/11019096.

APA, 6th edition

Heckel, Augustin, approximately 1690-1770, artist. ([1748])[The Countess of Suffolk's house at Twickenham [drawing]]. https://collections.library.yale.edu/catalog/11019096.