MLA
Stauffer Photo Service (San Antonio, Tex.). African American man being baptized by men in a river, with a large crowd of African American men and women watching from the shore. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/470zpc86cf-cor.
APA, 6th edition
Stauffer Photo Service (San Antonio, Tex.). (unknown)[African American man being baptized by men in a river, with a large crowd of African American men and women watching from the shore]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/470zpc86cf-cor.
Chicago
Stauffer Photo Service (San Antonio, Tex.), African American man being baptized by men in a river, with a large crowd of African American men and women watching from the shore, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/470zpc86cf-cor.