MLA

Erdoes, Richard, 1912-2008. Confrontation Bunkers. Box 54 | Custer, Wounded Knee, Longest Walk. 1973-1984, undated. https://collections.library.yale.edu/catalog/2083130.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 54 | Custer, Wounded Knee, Longest Walk"])(1973-1984, undated)[Confrontation Bunkers]. https://collections.library.yale.edu/catalog/2083130.