MLA
An African American Man Wearing an Overcoat and a Hat Standing in the Snow with a Snowball in His Right Hand with Trees and Buildings in the Background. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 51. https://digital.library.emory.edu/purl/279v15dv97-cor.
APA, 6th edition
An African American man wearing an overcoat and a hat standing in the snow with a snowball in his right hand with trees and buildings in the background (Box 51). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/279v15dv97-cor.
Chicago
“An African American Man Wearing an Overcoat and a Hat Standing in the Snow with a Snowball in His Right Hand with Trees and Buildings in the Background.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 51. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/279v15dv97-cor.