Cite

"Trillium." Watercolor, 20.4 x 13.9 cm.

MLA

Stenzel, Franz. "Trillium." Watercolor, 20.4 x 13.9 Cm. 0AD. https://collections.library.yale.edu/catalog/33228849.

APA, 6th edition

Stenzel, F. (0 C.E.). "Trillium." Watercolor, 20.4 x 13.9 cm. https://collections.library.yale.edu/catalog/33228849.