Cite

Labyrinth: [Box and flying shape]

MLA

Steinberg, Saul, 1914-1999. Labyrinth: [Box and flying shape]. Box 525 (Oversize), folder 7122. undated. https://collections.library.yale.edu/catalog/16855234.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 525 (Oversize), folder 7122"])(undated)[Labyrinth: [Box and flying shape]]. https://collections.library.yale.edu/catalog/16855234.