MLA

Erdoes, Richard, 1912-2008. Fetterman, Bozeman, Wagon Box, R.R. Fight. Box 45 | Plains Indian History I. 1976, undated. https://collections.library.yale.edu/catalog/10256397.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 45 | Plains Indian History I"])(1976, undated)[Fetterman, Bozeman, Wagon Box, R.R. Fight]. https://collections.library.yale.edu/catalog/10256397.