APA-ийн эшлэл(7 дахь хэвлэлт)

Kumar, D. (2006). Six sigma best practices: A guide to business process excellence for diverse industries. J. Ross Pub..

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Kumar, Dhirendra. Six Sigma Best Practices: A Guide to Business Process Excellence for Diverse Industries. Ft. Lauderdale, Fla.: J. Ross Pub., 2006.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Kumar, Dhirendra. Six Sigma Best Practices: A Guide to Business Process Excellence for Diverse Industries. J. Ross Pub., 2006.