Control Southfield. 2nd Edition. Ml: Automotive Industry Action Group, March 2005.
 Dietrych, E., Schulze, A., 2010. Statistical Procedures for Machine and Process Qualification. Six Edition. München: Hanser Fachbuchverlag.
 ISO 21747:2006. Statistical method - Processperformance and capability statistics for measured quality characteristics. Geneva.
 ISO 7870-2:2013. Control charts. Part 2: Shewhart control charts. Geneva.
 ISO/TR 22514-4:2007. Statistical method in process management