MLA

Simpson, Randolph Linsly, 1927-1992. Unknown photographer Album of 31 snapshots of Private Charles A. Perry and friends of the 101st Airborne Division, at Camp Breckenridge and in Korea, 1951 Official army regimental, Album, 8-1/2 X 11. Box 27, folder 1064. 1951. https://collections.library.yale.edu/catalog/2042539.

APA, 6th edition

Simpson, Randolph Linsly, 1927-1992. (["Box 27, folder 1064"])(1951)[Unknown photographer Album of 31 snapshots of Private Charles A. Perry and friends of the 101st Airborne Division, at Camp Breckenridge and in Korea, 1951 Official army regimental, Album, 8-1/2 X 11]. https://collections.library.yale.edu/catalog/2042539.