MLA
International Post Card Co. (N.Y.). Tubman High School, Augusta, Ga. : with a man standing outside it. April 14, 1908. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/450gtht7b1-cor.
APA, 6th edition
International Post Card Co. (N.Y.). (April 14, 1908)[Tubman High School, Augusta, Ga. : with a man standing outside it]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/450gtht7b1-cor.
Chicago
International Post Card Co. (N.Y.), Tubman High School, Augusta, Ga. : with a man standing outside it, April 14, 1908, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/450gtht7b1-cor.