MLA
Prince, Len, 1953-. M043 Portraits - Ingo. unknown. Len Prince papers. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z38qh-cor.
APA, 6th edition
Prince, Len, 1953-. (unknown)[M043 Portraits - Ingo]. Len Prince papers, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z38qh-cor.
Chicago
Prince, Len, 1953-, M043 Portraits - Ingo, unknown, Len Prince papers, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z38qh-cor.