MLA
Lockwood Shop (Lake Placid, N.Y.). Tombstone of John Brown, where he is buried with 12 other followers of his cause. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/344pk0p2rh-cor.
APA, 6th edition
Lockwood Shop (Lake Placid, N.Y.). (unknown)[Tombstone of John Brown, where he is buried with 12 other followers of his cause]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/344pk0p2rh-cor.
Chicago
Lockwood Shop (Lake Placid, N.Y.), Tombstone of John Brown, where he is buried with 12 other followers of his cause, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/344pk0p2rh-cor.