Opie, R. (2003). The 1920s scrapbook. New Cavendish.
Cita Chicago (17th ed.)Opie, Robert. The 1920s Scrapbook. London: New Cavendish, 2003.
Cita MLA (9th ed.)Opie, Robert. The 1920s Scrapbook. New Cavendish, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.