[Zur Farbenlehre.]
MLA
[Zur Farbenlehre.]. 0AD. https://collections.library.yale.edu/catalog/2018131.
APA, 6th edition
[Zur Farbenlehre.]. (0 C.E.). [Engravings, Illustrations, Prints (Visual works)]. https://collections.library.yale.edu/catalog/2018131.