Time Warner Books. (2005). Mind gym: Wake your mind up. Time Warner Books.
Cita Chicago (17th ed.)Time Warner Books. Mind Gym: Wake Your Mind Up. London: Time Warner Books, 2005.
Cita MLA (9th ed.)Time Warner Books. Mind Gym: Wake Your Mind Up. Time Warner Books, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.