Williamson, G. K. (1998). Smart Guide to making wise investments. Cader Books : Wiley.
Dyfyniad Arddull ChicagoWilliamson, Gordon K. Smart Guide to Making Wise Investments. New York: Cader Books : Wiley, 1998.
Dyfyniad MLAWilliamson, Gordon K. Smart Guide to Making Wise Investments. Cader Books : Wiley, 1998.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.