GOULD, J. S. (1986). The Negotiator's problem solver. John Wiley and Sons.
Dyfyniad Arddull ChicagoGOULD, Joe Sutherland. The Negotiator's Problem Solver. New York: John Wiley and Sons, 1986.
Dyfyniad MLAGOULD, Joe Sutherland. The Negotiator's Problem Solver. John Wiley and Sons, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.