Visual six sigma
Cox Ian, Gaudard Marie, Ramsey Philip J., Stephens Mia L., Wright Leo T.Kniha
Citace v seznamu literatury:
COX, Ian; GAUDARD, Marie; RAMSEY, Philip J.; STEPHENS, Mia L. a WRIGHT, Leo T. Visual six sigma: making data analysis lean. Wiley & SAS business series. Hoboken, N.J.: John Wiley, [2010]. ISBN 9780470506912.