MLA
Asheville Post Card Co. (Asheville, N.C.). Smoky Mountain Tours sightseeing bus at Nigger Head, on Little River Gorge. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/313zs7h46c-cor.
APA, 6th edition
Asheville Post Card Co. (Asheville, N.C.). (unknown)[Smoky Mountain Tours sightseeing bus at Nigger Head, on Little River Gorge]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/313zs7h46c-cor.
Chicago
Asheville Post Card Co. (Asheville, N.C.), Smoky Mountain Tours sightseeing bus at Nigger Head, on Little River Gorge, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/313zs7h46c-cor.