Cite

An original watercolor. No source, no date. [04971-1]

MLA

An Original Watercolor. No Source, No Date. [04971-1]. 0AD. https://collections.library.yale.edu/catalog/10656587.

APA, 6th edition

An original watercolor. No source, no date. [04971-1]. (0 C.E.). https://collections.library.yale.edu/catalog/10656587.