1. Quality-Vocabulary (ISO/IEC Standard 8402), International Organization for Standardization, 1986.
2. Quality Management and Quality Assurance Standards. Guidelines for Selection and Use (ISO/IEC Standard 9000), International Organization for Standardization, 1987.
3. Quality Management and Quality System Elements (ISO/IEC Standard 9004), International Organization for Standardization, 1987.
4. General Criteria for the Operation of Testing Laboratories (European Standard EN 45001), CEN/CENELEC, Brussels, Belgium, 1989.
5. General Requirements for the Technical Competence of Testing Laboratories (ISO/IEC Guide 25), International Organization for Standardization, 1982.