Tuominen, K. (2012). Six sigma excellence criteria: Self-assessment work book : 39 probing questions and contrasting pairs of examples : what separates the successful from the average? Sai Global.
Chicago-referens (17:e uppl.)Tuominen, Kari. Six Sigma Excellence Criteria: Self-assessment Work Book : 39 Probing Questions and Contrasting Pairs of Examples : What Separates the Successful from the Average? Australia: Sai Global, 2012.
MLA-referens (9:e uppl.)Tuominen, Kari. Six Sigma Excellence Criteria: Self-assessment Work Book : 39 Probing Questions and Contrasting Pairs of Examples : What Separates the Successful from the Average? Sai Global, 2012.
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