MLA
Souvenir Post Card Co. (N.Y.). Digging white clay near Augusta, Ga.. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/122v41ns57-cor.
APA, 6th edition
Souvenir Post Card Co. (N.Y.). (unknown)[Digging white clay near Augusta, Ga.]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/122v41ns57-cor.
Chicago
Souvenir Post Card Co. (N.Y.), Digging white clay near Augusta, Ga., unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/122v41ns57-cor.