1. Peer Reviewed: Measurement Uncertainty
2. ISO/IEC Guide 25, General requirements for the competence of calibration and testing laboratories, third edn., 1990
3. Guide to the Expression of Uncertainty in Measurement, ISO, Geneva, Switzerland, 1993 (ISBN 92-67-10188-9)
4. Eurachem: Quantifying Uncertainty in Analytical Measurement, Laboratory of the Government Chemist, London, 1995 (ISBN 0-948926-08-2)
5. Expression of uncertainty of an acid–base titration