MLA

MacMullen, Ramsay, 1928-. Aptheker, Herbert. Box 1, folder 1. 1983-2014. https://collections.library.yale.edu/catalog/33511935.

APA, 6th edition

MacMullen, Ramsay, 1928-. (["Box 1, folder 1"])(1983-2014)[Aptheker, Herbert]. https://collections.library.yale.edu/catalog/33511935.