Dia Helionora [art original].
MLA
Harding, G. P. (George Perfect), 1780-1853, artist. Dia Helionora [art original].. [not after 1824]. https://collections.library.yale.edu/catalog/16193361.
APA, 6th edition
Harding, G. P. (George Perfect), 1780-1853, artist. ([not after 1824])[Dia Helionora [art original].]. https://collections.library.yale.edu/catalog/16193361.