Time Warner Books. (2005). Mind gym: Wake your mind up. Time Warner Books.
Chicago Style aipamenaTime Warner Books. Mind Gym: Wake Your Mind Up. London: Time Warner Books, 2005.
MLA aipamenaTime Warner Books. Mind Gym: Wake Your Mind Up. Time Warner Books, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.