Kumar,Dhirendra. (2014). Six sigma best practices: :a guide to business process excellence for diverse industries (2nd ed.). Cengage Learning.
استشهاد بنمط شيكاغوKumar,Dhirendra. Six Sigma Best Practices: :a Guide to Business Process Excellence for Diverse Industries. 2nd ed. New delhi: Cengage Learning, 2014.
MLA استشهادKumar,Dhirendra. Six Sigma Best Practices: :a Guide to Business Process Excellence for Diverse Industries. 2nd ed. Cengage Learning, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.