MLA

Garver, M. S. (Milton Stahl). Volume III: American Ambulance Service in France, travels in France events at Yale University. Box 1, folder 3. 1915-1921. https://collections.library.yale.edu/catalog/10468161.

APA, 6th edition

Garver, M. S. (Milton Stahl). (["Box 1, folder 3"])(1915-1921)[Volume III: American Ambulance Service in France, travels in France events at Yale University]. https://collections.library.yale.edu/catalog/10468161.