MLA
Prince William Pharmacy (Manassas, Va.). Library and trades bldg. : Industrial School for Colored Youth, Manassas, Va.. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/119f4qrfms-cor.
APA, 6th edition
Prince William Pharmacy (Manassas, Va.). (unknown)[Library and trades bldg. : Industrial School for Colored Youth, Manassas, Va.]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/119f4qrfms-cor.
Chicago
Prince William Pharmacy (Manassas, Va.), Library and trades bldg. : Industrial School for Colored Youth, Manassas, Va., unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/119f4qrfms-cor.