MLA

Lloyd, Lewis L. (1938). Programs and clippings; letters, programs and clippings on MANA productions; Festival Orchestra Society New York notebook; Association of American Dance Companies; Labor Relations in the Performing Arts. Box 15. 1966-1967. https://collections.library.yale.edu/catalog/11155996.

APA, 6th edition

Lloyd, Lewis L. (1938). (["Box 15"])(1966-1967)[Programs and clippings; letters, programs and clippings on MANA productions; Festival Orchestra Society New York notebook; Association of American Dance Companies; Labor Relations in the Performing Arts]. https://collections.library.yale.edu/catalog/11155996.