APA

Pyzdek T., Keller P., . (2009). The Six Sigma handbook. New York, NY [u.a.]: McGraw-Hill.

Chicago

Pyzdek Thomas, Keller Paul, . 2009. The Six Sigma handbook. New York, NY [u.a.]: McGraw-Hill.

Harvard

Pyzdek T., Keller P., . (2009). The Six Sigma handbook. New York, NY [u.a.]: McGraw-Hill.

MLA

Pyzdek Thomas, Keller Paul, . The Six Sigma handbook. New York, NY [u.a.]: McGraw-Hill. 2009.