MLA

Dellenbaugh, Frederick Samuel, 1853-1935. Arizona. Box 3, folder 110. 1930. https://collections.library.yale.edu/catalog/2018315.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 3, folder 110"])(1930)[Arizona]. https://collections.library.yale.edu/catalog/2018315.