Cite

[Count Ugolino and his children in the dungeon] [art original]

MLA

Rowlandson, Thomas, 1756-1827, artist. [Count Ugolino and his children in the dungeon] [art original]. [not before 1773]. https://collections.library.yale.edu/catalog/17324454.

APA, 6th edition

Rowlandson, Thomas, 1756-1827, artist. ([not before 1773])[[Count Ugolino and his children in the dungeon] [art original]]. https://collections.library.yale.edu/catalog/17324454.