1. EOQC, Glossary of Terms Used in the Management of Quality. 6th Ed. 1989.
2. IEC 50 (191): International Electrotechnical Vocabulary (IEV) - Chapter 191: Dependability and Quality of Service. 1990.
3. 3. IEEE, ANSI/IEEE Std 100-1988: IEEE Standard Dictionary of Electrical and Electronics Terms. 4th Ed. 1988
4. 4. Std 610.12-1990: IEEE Standard Glossary of Software Engineering Terminology. 1990 (see also IEEE STD 982.1-1988 and 982.2-1988).
5. IS08402: Quality - Vocabulary. 1986.