MLA

Lopez, Robert S. (Robert Sabatino), 1910-1985. Treviso. Box 6, folder 14-28. 1960s-1970s. https://collections.library.yale.edu/catalog/10020780.

APA, 6th edition

Lopez, Robert S. (Robert Sabatino), 1910-1985. (["Box 6, folder 14-28"])(1960s-1970s)[Treviso]. https://collections.library.yale.edu/catalog/10020780.