Cite

Untitled [Man's head as butterfly above streetscape]

MLA

Steinberg, Saul, 1914-1999. Untitled [Man's head as butterfly above streetscape]. Box 456, folder 6309. undated. https://collections.library.yale.edu/catalog/16851478.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 456, folder 6309"])(undated)[Untitled [Man's head as butterfly above streetscape]]. https://collections.library.yale.edu/catalog/16851478.