MLA
Elcha (New York, N.Y.). Portrait of J. Berni Barbour, posing with a cane, next to a piano. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/450gtht7ct-cor.
APA, 6th edition
Elcha (New York, N.Y.). (unknown)[Portrait of J. Berni Barbour, posing with a cane, next to a piano]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/450gtht7ct-cor.
Chicago
Elcha (New York, N.Y.), Portrait of J. Berni Barbour, posing with a cane, next to a piano, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/450gtht7ct-cor.