克勞斯比‧菲力 ((Crosby, Philip B.))

品質免費 = Quality is Free by: 克勞斯比‧菲力 ((Crosby, Philip B.)); 顏斯華 (Language materials, printed) , [著]

來談品質 = Let's Talk Quality by: 克勞斯比‧菲力 ((Crosby, Philip B.)); 顏斯華 (Language materials, printed) , [著]