(2005). Six sigma for transactions and service. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoSix Sigma for Transactions and Service. New York: McGraw-Hill, 2005.
ציטוט MLASix Sigma for Transactions and Service. New York: McGraw-Hill, 2005.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.