Martin, Helen and Eugene
MLA
White, Walter, 1893-1955. Martin, Helen and Eugene. Box 4, folder 131. 1929-1955. https://collections.library.yale.edu/catalog/16745943.
APA, 6th edition
White, Walter, 1893-1955. (["Box 4, folder 131"])(1929-1955)[Martin, Helen and Eugene]. https://collections.library.yale.edu/catalog/16745943.