MLA

Lmanian, Alexander, 1925-1996. Army, Second Division Memorial near the Ellipse. Box 1, folder 71. 1968 April 2. https://collections.library.yale.edu/catalog/2042943.

APA, 6th edition

Lmanian, Alexander, 1925-1996. (["Box 1, folder 71"])(1968 April 2)[Army, Second Division Memorial near the Ellipse]. https://collections.library.yale.edu/catalog/2042943.