Cita APA (7a ed.)
Bullock, A. The Twentieth Century : A Promethean Age: The Twentieth Century. Thames and Hudson.
Cita estilo Chicago (17a ed.)
Bullock, Alan. The Twentieth Century : A Promethean Age: The Twentieth Century. Nueva York, EUA: Thames and Hudson.
Cita MLA (9a ed.)
Bullock, Alan. The Twentieth Century : A Promethean Age: The Twentieth Century. Thames and Hudson.
Precaución: Estas citas no son 100% exactas.