Cite

Untitled [Red spiral-bound "Grumbacher All-technique" sketchbook]

MLA

Steinberg, Saul, 1914-1999. Untitled [Red spiral-bound "Grumbacher All-technique" sketchbook]. Box 360, folder 4851. undated. https://collections.library.yale.edu/catalog/2016847.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 360, folder 4851"])(undated)[Untitled [Red spiral-bound "Grumbacher All-technique" sketchbook]]. https://collections.library.yale.edu/catalog/2016847.