MLA
Green Studio Photographers (Chester, Pa.). Four men looking at some kind of plans on paper, with chains hanging down. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/395w6m90b4-cor.
APA, 6th edition
Green Studio Photographers (Chester, Pa.). (unknown)[Four men looking at some kind of plans on paper, with chains hanging down]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/395w6m90b4-cor.
Chicago
Green Studio Photographers (Chester, Pa.), Four men looking at some kind of plans on paper, with chains hanging down, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/395w6m90b4-cor.