Cite

Untitled [Abstract bird on a tree limb]

MLA

Steinberg, Saul, 1914-1999. Untitled [Abstract bird on a tree limb]. Box 414, folder 5528. undated. https://collections.library.yale.edu/catalog/16849910.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 414, folder 5528"])(undated)[Untitled [Abstract bird on a tree limb]]. https://collections.library.yale.edu/catalog/16849910.