MLA

Lloyd, Lewis L. (1938). Merce Cunningham and Dance Company, John Cage and David Tudor, Club 49, Stiges. poster (#78). Box 70 (Broadside). 1966 August 28. https://collections.library.yale.edu/catalog/33476468.

APA, 6th edition

Lloyd, Lewis L. (1938). (["Box 70 (Broadside)"])(1966 August 28)[Merce Cunningham and Dance Company, John Cage and David Tudor, Club 49, Stiges. poster (#78)]. https://collections.library.yale.edu/catalog/33476468.