MLA
Painting of Martin Luther King, Jr. Standing with Abraham Lincoln and John F. Kennedy in Heaven, with Other Figures around Them. 1969. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/897kprr50m-cor.
APA, 6th edition
Painting of Martin Luther King, Jr. standing with Abraham Lincoln and John F. Kennedy in heaven, with other figures around them (Box 71). (1969). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr50m-cor.
Chicago
“Painting of Martin Luther King, Jr. Standing with Abraham Lincoln and John F. Kennedy in Heaven, with Other Figures around Them.” Postcards. Robert Langmuir African American Photograph Collection, 1969. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr50m-cor.