Cite

"Fellow Trooper," short story

MLA

Lewis, Sinclair, 1885-1951. "Fellow Trooper," short story. Box 36, folder 296. undated. https://collections.library.yale.edu/catalog/17116520.

APA, 6th edition

Lewis, Sinclair, 1885-1951. (["Box 36, folder 296"])(undated)["Fellow Trooper," short story]. https://collections.library.yale.edu/catalog/17116520.