Porter, L. J. . .., & Tanner, S. J. . .. (2009). Assessing business excellence: A guide to business excellence and self- assessment (2nd ed.). Butterworth- Heineman.
استشهاد بنمط شيكاغوPorter, L J ., و S J. Tanner. Assessing Business Excellence: A Guide to Business Excellence and Self- Assessment. 2nd ed. Oxford: Butterworth- Heineman, 2009.
MLA استشهادPorter, L J ., و S J. Tanner. Assessing Business Excellence: A Guide to Business Excellence and Self- Assessment. 2nd ed. Butterworth- Heineman, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.