1. Quality Control in Analytical Chemistry;Kateman,1993
2. International Standards Organization, ISO 9000: Quality management systems foundations and vocabulary, ISO, Geneva, Switzerland, 2000
3. International Standards Organization, ISO/IEC 17025: General Requirements for the Competence of Testing and Calibration Laboratories, ISO, Geneva, Switzerland, 1999
4. Quality Assurance in Analytical Chemistry,2004
5. CITAC and Eurachem, Guide to Quality in Analytical Chemistry: An Aid to Accreditation, 2002. Available from: