Stein, M.A.
MLA
Huntington, Ellsworth, 1876-1947. Stein, M.A.. Box 2, folder 71. 1906. https://collections.library.yale.edu/catalog/32202847.
APA, 6th edition
Huntington, Ellsworth, 1876-1947. (["Box 2, folder 71"])(1906)[Stein, M.A.]. https://collections.library.yale.edu/catalog/32202847.