1. AFNOR, 2010. 〈http://www.afnor.org〉.
2. AIAG, 2010. 〈http://www.aiag.org〉.
3. APICS,2010. 〈http://www.apics.org〉.
4. Benchmarking: a Practitioner's Guide for Becoming and Staying Best of the Best;Balm,1992
5. Understanding context before using it;Bazire;Modeling and Using Context,2005