Guns
MLA
Erdoes, Richard, 1912-2008. Guns. Box 60 | Plains Art II, 19th Century Paintings. 1989, undated. https://collections.library.yale.edu/catalog/2087331.
APA, 6th edition
Erdoes, Richard, 1912-2008. (["Box 60 | Plains Art II, 19th Century Paintings"])(1989, undated)[Guns]. https://collections.library.yale.edu/catalog/2087331.