MLA
Christmas Musical Scores Used by the 43rd General Hospital Unit. 1942. Robert W. Woodruff Health Sciences Center. Library, Box 1, Folder 10. https://digital.library.emory.edu/purl/791sf7m1r4-cor.
APA, 6th edition
Christmas musical scores used by the 43rd General Hospital unit (Box 1, Folder 10). (1942). [Sheet music]. Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/791sf7m1r4-cor.
Chicago
“Christmas Musical Scores Used by the 43rd General Hospital Unit.” Sheet music. Emory Unit Collection, 1942. Box 1, Folder 10. Robert W. Woodruff Health Sciences Center. Library. https://digital.library.emory.edu/purl/791sf7m1r4-cor.