APA Style

Pyzdek, T., Keller, P, A, (, A. (c2010). Six Sigma handbook: a complete guide for green belts, black belts, and managers at all levels (3rd ed.). nyu: McGraw-Hill Companies.

MLA Style

Pyzdek, Thomas.., Keller, Paul, A., (Paul, Andrew). "Six Sigma handbook: a complete guide for green belts, black belts, and managers at all levels". 3rd ed. nyu: McGraw-Hill Companies, c2010. Computer File.