Georgia O'Keeffe
MLA
Van Vechten, Carl, 1880-1964. Georgia O'Keeffe. undated. https://collections.library.yale.edu/catalog/2003227.
APA, 6th edition
Van Vechten, Carl, 1880-1964. (undated)[Georgia O'Keeffe]. https://collections.library.yale.edu/catalog/2003227.