Cone, Etta
MLA
Stein, Gertrude, 1874-1946. Cone, Etta. Box 102, folder 1981-1982. 1906-34, n.d.. https://collections.library.yale.edu/catalog/2077125.
APA, 6th edition
Stein, Gertrude, 1874-1946. (["Box 102, folder 1981-1982"])(1906-34, n.d.)[Cone, Etta]. https://collections.library.yale.edu/catalog/2077125.