"Napea[?]" Watercolor of flowering plant, 20.4 x 14.2 cm.
MLA
Stenzel, Franz. "Napea[?]" Watercolor of Flowering Plant, 20.4 x 14.2 Cm. 1854. https://collections.library.yale.edu/catalog/2003143.
APA, 6th edition
Stenzel, F. (1854). "Napea[?]" Watercolor of flowering plant, 20.4 x 14.2 cm. https://collections.library.yale.edu/catalog/2003143.