MLA

Dellenbaugh, Frederick Samuel, 1853-1935. Arizona. Box 3, folder 116. 1925. https://collections.library.yale.edu/catalog/2018325.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 3, folder 116"])(1925)[Arizona]. https://collections.library.yale.edu/catalog/2018325.