MLA
Rotograph Co. (New York, N.Y.). De fokes at home : an African American family sitting out the steps of a cabin. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/634sj3txbt-cor.
APA, 6th edition
Rotograph Co. (New York, N.Y.). (unknown)[De fokes at home : an African American family sitting out the steps of a cabin]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/634sj3txbt-cor.
Chicago
Rotograph Co. (New York, N.Y.), De fokes at home : an African American family sitting out the steps of a cabin, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/634sj3txbt-cor.