Competition for Sculpture in Plexiglas. Five winning designs
MLA
Dreier, Katherine S. (Katherine Sophie), 1877-1952. Competition for Sculpture in Plexiglas. Five winning designs. Box 74, folder 1924. [1939]. https://collections.library.yale.edu/catalog/2019711.
APA, 6th edition
Dreier, Katherine S. (Katherine Sophie), 1877-1952. (["Box 74, folder 1924"])([1939])[Competition for Sculpture in Plexiglas. Five winning designs]. https://collections.library.yale.edu/catalog/2019711.