1. Baclawski, K.: Introduction to Probability with R. Chapman & Hall/CRC Texts in Statistical Science. Taylor & Francis, New York (2008)
2. Box, G.: Total quality: its origins and its future. In: Total Quality Management, pp. 119–127. Springer, Berlin (1995)
3. Cano, E.L., Moguerza, J.M., Redchuk, A.: Six Sigma with R. Statistical Engineering for Process Improvement, Use R!, vol. 36. Springer, New York (2012). http://www.springer.com/statistics/book/978-1-4614-3651-5
4. Crosby, P.: Quality is Free: The Art of Making Quality Certain. Mentor Book. McGraw-Hill, New York (1979). https://books.google.es/books?id=n4IubCcpm0EC
5. Eubank, R., Kupresanin, A.: Statistical Computing in C++ and R. Chapman & Hall/CRC The R Series. Taylor & Francis, New York (2011). https://books.google.es/books?id=CmZRui57cWkC