Perkins, F. (1947). The Roosevelt I knew (4th printing.). Viking.
Cita Chicago Style (17a ed.)Perkins, Frances. The Roosevelt I Knew. 4th printing. New York: Viking, 1947.
Cita MLA (9a ed.)Perkins, Frances. The Roosevelt I Knew. 4th printing. Viking, 1947.
Precaución: Estas citas no son 100% exactas.