Gray, J. (2001). How To Get What You Want And Want What You Have (sco.). Berrett-Koehler.
Cita Chicago (17th ed.)Gray, John. How To Get What You Want And Want What You Have. sco. San Franci: Berrett-Koehler, 2001.
Cita MLA (9th ed.)Gray, John. How To Get What You Want And Want What You Have. sco. Berrett-Koehler, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.