MLA
Deane & Breit (Clinton Corners, N.Y.). Our country cousins, Clinton Corners, N.D. : four African American boys and one girl posing. August 19, 1911. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7612ngf1xh-cor.
APA, 6th edition
Deane & Breit (Clinton Corners, N.Y.). (August 19, 1911)[Our country cousins, Clinton Corners, N.D. : four African American boys and one girl posing]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7612ngf1xh-cor.
Chicago
Deane & Breit (Clinton Corners, N.Y.), Our country cousins, Clinton Corners, N.D. : four African American boys and one girl posing, August 19, 1911, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7612ngf1xh-cor.