MLA
Albertype Co. (Brooklyn, N.Y.). Georgia cake walk : African American men and women in costume dancing the cakewalk, while a man plays the violin. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/726xwdbrzc-cor.
APA, 6th edition
Albertype Co. (Brooklyn, N.Y.). (unknown)[Georgia cake walk : African American men and women in costume dancing the cakewalk, while a man plays the violin]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/726xwdbrzc-cor.
Chicago
Albertype Co. (Brooklyn, N.Y.), Georgia cake walk : African American men and women in costume dancing the cakewalk, while a man plays the violin, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/726xwdbrzc-cor.