MLA
Chessler Co. (Baltimore, Md.). Sweet contentment. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/716pzgmsfk-cor.
APA, 6th edition
Chessler Co. (Baltimore, Md.). (unknown)[Sweet contentment]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/716pzgmsfk-cor.
Chicago
Chessler Co. (Baltimore, Md.), Sweet contentment, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/716pzgmsfk-cor.