Kumar,Dhirendra. (2014). Six sigma best practices: :a guide to business process excellence for diverse industries (2nd ed.). Cengage Learning.
Chicago-стиль цитированияKumar,Dhirendra. Six Sigma Best Practices: :a Guide to Business Process Excellence for Diverse Industries. 2nd ed. New delhi: Cengage Learning, 2014.
MLA-цитированиеKumar,Dhirendra. Six Sigma Best Practices: :a Guide to Business Process Excellence for Diverse Industries. 2nd ed. Cengage Learning, 2014.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.