Johnson, R. A. (1997). Busines Statistics: Decision Making with Data. John Wiley.
Dyfyniad Arddull ChicagoJohnson, Richard A. Busines Statistics: Decision Making with Data. New York: John Wiley, 1997.
Dyfyniad MLAJohnson, Richard A. Busines Statistics: Decision Making with Data. John Wiley, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.