Cite

"Clarkia." Watercolor, 19.4 x 13 cm.

MLA

Stenzel, Franz. "Clarkia." Watercolor, 19.4 x 13 Cm. 1854. https://collections.library.yale.edu/catalog/33228846.

APA, 6th edition

Stenzel, F. (1854). "Clarkia." Watercolor, 19.4 x 13 cm. https://collections.library.yale.edu/catalog/33228846.