MLA
An African American Boy in a Tuxedo Carrying a Cushion with a Ring and an African American Girl in a Dress Carrying a Basket Walking Together down an Aisle between African Americans Seated in Pews. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 40. https://digital.library.emory.edu/purl/6558cz8wgf-cor.
APA, 6th edition
An African American boy in a tuxedo carrying a cushion with a ring and an African American girl in a dress carrying a basket walking together down an aisle between African Americans seated in pews (Box 40). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6558cz8wgf-cor.
Chicago
“An African American Boy in a Tuxedo Carrying a Cushion with a Ring and an African American Girl in a Dress Carrying a Basket Walking Together down an Aisle between African Americans Seated in Pews.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 40. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6558cz8wgf-cor.