Reck, R. R. (2001). The X-factor: Getting extraordinary results from ordinary people. New York: Wiley.
Dyfyniad Arddull ChicagoReck, Ross Richard. The X-factor: Getting Extraordinary Results From Ordinary People. New York: Wiley, 2001.
Dyfyniad MLAReck, Ross Richard. The X-factor: Getting Extraordinary Results From Ordinary People. New York: Wiley, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.