MLA
Portrait of Mrs. Julia Brown, a Former FBI Undercover Operative in Communist Civil Rights, with a Picture of Martin Luther King at a Training School for Communists. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/948sbcc2hz-cor.
APA, 6th edition
Portrait of Mrs. Julia Brown, a former FBI undercover operative in communist civil rights, with a picture of Martin Luther King at a training school for Communists (Box 71). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/948sbcc2hz-cor.
Chicago
“Portrait of Mrs. Julia Brown, a Former FBI Undercover Operative in Communist Civil Rights, with a Picture of Martin Luther King at a Training School for Communists.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/948sbcc2hz-cor.