MLA

Macleod, Norman, 1906-1985. Incoming. Box 23, folder 247-249. 1968-1985. https://collections.library.yale.edu/catalog/17206866.

APA, 6th edition

Macleod, Norman, 1906-1985. (["Box 23, folder 247-249"])(1968-1985)[Incoming]. https://collections.library.yale.edu/catalog/17206866.