MLA
Kobert Color Publishers (Doniphan, Mo.). John Trammel, Negro cook and member of the James Gang for 17 years, this is what he looked like when he was 111 years old and testified in court that J. Frank Dalton was the one and only Jesse Woodson James, his boss man. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/85370rxwgz-cor.
APA, 6th edition
Kobert Color Publishers (Doniphan, Mo.). (unknown)[John Trammel, Negro cook and member of the James Gang for 17 years, this is what he looked like when he was 111 years old and testified in court that J. Frank Dalton was the one and only Jesse Woodson James, his boss man]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/85370rxwgz-cor.
Chicago
Kobert Color Publishers (Doniphan, Mo.), John Trammel, Negro cook and member of the James Gang for 17 years, this is what he looked like when he was 111 years old and testified in court that J. Frank Dalton was the one and only Jesse Woodson James, his boss man, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/85370rxwgz-cor.