Gaya APA

Bass, I., Lawton, B. (2009). Lean six sigma using SigmaXL and Minitab (1). New York: McGraw- Hill Company, Inc..

Gaya MLA

Bass, Issa., Lawton, Barbara. "Lean six sigma using SigmaXL and Minitab". 1 New York: McGraw- Hill Company, Inc., 2009. Hardcopy (Textbook).