Cite

Untitled [Creature with red lips and blue nose]

MLA

Steinberg, Saul, 1914-1999. Untitled [Creature with red lips and blue nose]. Box 79, folder 1726. undated. https://collections.library.yale.edu/catalog/32475688.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 79, folder 1726"])(undated)[Untitled [Creature with red lips and blue nose]]. https://collections.library.yale.edu/catalog/32475688.