MLA

Miller, Henry, 1891-1980. Other notebooks. Box 5, folder 52-54. 1937-1951, undated. https://collections.library.yale.edu/catalog/32260834.

APA, 6th edition

Miller, Henry, 1891-1980. (["Box 5, folder 52-54"])(1937-1951, undated)[Other notebooks]. https://collections.library.yale.edu/catalog/32260834.