MLA
Rich, Richard H., 1901-1975. Letter from Richard H. Rich, President of Rich's department stores, to Jessie Hill Jr. responding to the letter sent on March 10th, 1958, stating that the issue regarding the lack of restrooms for Black customers will be looked into - March 14, 1958. March 14, 1958. Richard H. Rich Papers, 1902-1981. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3720cfxq3v-cor.
APA, 6th edition
Rich, Richard H., 1901-1975. (March 14, 1958)[Letter from Richard H. Rich, President of Rich's department stores, to Jessie Hill Jr. responding to the letter sent on March 10th, 1958, stating that the issue regarding the lack of restrooms for Black customers will be looked into - March 14, 1958]. Richard H. Rich Papers, 1902-1981, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3720cfxq3v-cor.
Chicago
Rich, Richard H., 1901-1975, Letter from Richard H. Rich, President of Rich's department stores, to Jessie Hill Jr. responding to the letter sent on March 10th, 1958, stating that the issue regarding the lack of restrooms for Black customers will be looked into - March 14, 1958, March 14, 1958, Richard H. Rich Papers, 1902-1981, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3720cfxq3v-cor.