MLA
Gonne, Maud, 1866-1953. Fragment of letter written by Maud Gonne to William Butler Yeats. 1890 to circa 1893. Maud Gonne and W.B. Yeats Papers, circa 1890-1938. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/39995x6cx1-cor.
APA, 6th edition
Gonne, Maud, 1866-1953. (1890 to circa 1893)[Fragment of letter written by Maud Gonne to William Butler Yeats]. Maud Gonne and W.B. Yeats Papers, circa 1890-1938, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/39995x6cx1-cor.
Chicago
Gonne, Maud, 1866-1953, Fragment of letter written by Maud Gonne to William Butler Yeats, 1890 to circa 1893, Maud Gonne and W.B. Yeats Papers, circa 1890-1938, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/39995x6cx1-cor.