ROBERTS HARRY V. (1993). QUALITY IS PERSONAL: A FOUNDATION FOR TOTAL QUALITY MANAGEMENT. FREE PRESS.
Dyfyniad Arddull ChicagoROBERTS HARRY V. QUALITY IS PERSONAL: A FOUNDATION FOR TOTAL QUALITY MANAGEMENT. NEW YORK: FREE PRESS, 1993.
Dyfyniad MLAROBERTS HARRY V. QUALITY IS PERSONAL: A FOUNDATION FOR TOTAL QUALITY MANAGEMENT. FREE PRESS, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.