Khan, R. M. (2013). Problem solving and data analysis using Minitab: A clear and easy guide to six sigma methodology. Wiley.
Lua i Stíl Chicago (17ú heag.)Khan, Rehman M. Problem Solving and Data Analysis Using Minitab: A Clear and Easy Guide to Six Sigma Methodology. Chichester, West Sussex, U.K.: Wiley, 2013.
Lua MLA (9ú heag.)Khan, Rehman M. Problem Solving and Data Analysis Using Minitab: A Clear and Easy Guide to Six Sigma Methodology. Wiley, 2013.
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