Porter, L. J. (2004). Assessing business excellence: A guide to business excellence and self-assessment (2nd ed.). Elsevier.
Chicago-Zitierstil (17. Ausg.)Porter, Leslie J. Assessing Business Excellence: A Guide to Business Excellence and Self-assessment. 2nd ed. Amsterdam [Netherlands]: Elsevier, 2004.
MLA-Zitierstil (9. Ausg.)Porter, Leslie J. Assessing Business Excellence: A Guide to Business Excellence and Self-assessment. 2nd ed. Elsevier, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.