"Clear Lake, California." Watercolor, 23.6 x 30.5 cm.
MLA
Stenzel, Franz (1906-1998). "Clear Lake, California." Watercolor, 23.6 x 30.5 cm.. Box 1, folder 11. 1857. https://collections.library.yale.edu/catalog/10690894.
APA, 6th edition
Stenzel, Franz (1906-1998). (["Box 1, folder 11"])(1857)["Clear Lake, California." Watercolor, 23.6 x 30.5 cm.]. https://collections.library.yale.edu/catalog/10690894.