["Thy Truth, O Lord"]: holograph manuscript (With letter from Evelyn Washburn and a copy of Wharton's "Easter" in Washburn's hand)
MLA
Wharton, Edith, 1862-1937. ["Thy Truth, O Lord"]: holograph manuscript (With letter from Evelyn Washburn and a copy of Wharton's "Easter" in Washburn's hand). Box 21, folder 685. 1881. https://collections.library.yale.edu/catalog/17111142.
APA, 6th edition
Wharton, Edith, 1862-1937. (["Box 21, folder 685"])(1881)[["Thy Truth, O Lord"]: holograph manuscript (With letter from Evelyn Washburn and a copy of Wharton's "Easter" in Washburn's hand)]. https://collections.library.yale.edu/catalog/17111142.