MLA
Artvue Post Card Co. (New York, N.Y.). Chester Blanks and his Mother at Victory Day. December 1918. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/255z612jz4-cor.
APA, 6th edition
Artvue Post Card Co. (New York, N.Y.). (December 1918)[Chester Blanks and his Mother at Victory Day]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/255z612jz4-cor.
Chicago
Artvue Post Card Co. (New York, N.Y.), Chester Blanks and his Mother at Victory Day, December 1918, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/255z612jz4-cor.