Diagram of family relationship, holograph
MLA
O'Neill, Eugene, 1888-1953. Diagram of family relationship, holograph. Box 106, folder 1792. n.d.. https://collections.library.yale.edu/catalog/17060816.
APA, 6th edition
O'Neill, Eugene, 1888-1953. (["Box 106, folder 1792"])(n.d.)[Diagram of family relationship, holograph]. https://collections.library.yale.edu/catalog/17060816.