Παραπομπή APA
Eckes, G. (2001). General electric`s six sigma revolution: How general electric and others turned process into profits. New York: John Wiley.
Παραπομπή Chicago StyleEckes, George. General Electric`s Six Sigma Revolution: How General Electric and Others Turned Process Into Profits. New York: John Wiley, 2001.
Παραπομπή MLAEckes, George. General Electric`s Six Sigma Revolution: How General Electric and Others Turned Process Into Profits. New York: John Wiley, 2001.
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