MLA

Lloyd, Lewis L. (1938). Photographs, programs, clippings, correspondence, business papers relating to Merce Cunningham and Robert Joffrey Ballet, and other papers. Box 10. 1963-1964. https://collections.library.yale.edu/catalog/10516122.

APA, 6th edition

Lloyd, Lewis L. (1938). (["Box 10"])(1963-1964)[Photographs, programs, clippings, correspondence, business papers relating to Merce Cunningham and Robert Joffrey Ballet, and other papers]. https://collections.library.yale.edu/catalog/10516122.