MLA
Rich, Richard H., 1901-1975. Letter from Richard H. Rich, President of Rich's department stores, to Lonnie C. King, The Committee on Appeal for Human Rights, rejecting another meeting between the two due to them meeting recently and making their views on segregation known - August 10, 1960. August 10, 1960. Richard H. Rich Papers, 1902-1981. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/552w3r22qm-cor.
APA, 6th edition
Rich, Richard H., 1901-1975. (August 10, 1960)[Letter from Richard H. Rich, President of Rich's department stores, to Lonnie C. King, The Committee on Appeal for Human Rights, rejecting another meeting between the two due to them meeting recently and making their views on segregation known - August 10, 1960]. Richard H. Rich Papers, 1902-1981, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/552w3r22qm-cor.
Chicago
Rich, Richard H., 1901-1975, Letter from Richard H. Rich, President of Rich's department stores, to Lonnie C. King, The Committee on Appeal for Human Rights, rejecting another meeting between the two due to them meeting recently and making their views on segregation known - August 10, 1960, August 10, 1960, Richard H. Rich Papers, 1902-1981, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/552w3r22qm-cor.