Untitled [Knight in dragon armor on charger]
MLA
Steinberg, Saul, 1914-1999. Untitled [Knight in dragon armor on charger]. Box 337, folder 4690. undated. https://collections.library.yale.edu/catalog/16856915.
APA, 6th edition
Steinberg, Saul, 1914-1999. (["Box 337, folder 4690"])(undated)[Untitled [Knight in dragon armor on charger]]. https://collections.library.yale.edu/catalog/16856915.