Cite

Glen Canyon

MLA

Dellenbaugh, Frederick Samuel, 1853-1935. Glen Canyon. Box 3, folder 90. 1932 Aug. https://collections.library.yale.edu/catalog/2018237.

APA, 6th edition

Dellenbaugh, Frederick Samuel, 1853-1935. (["Box 3, folder 90"])(1932 Aug)[Glen Canyon]. https://collections.library.yale.edu/catalog/2018237.