King, Bob; Schlicksupp, Helmut, The Idea Edge, Goal/QPC, 1998.

Comissão Europeia, Benchmarking Facts – A European Perspective, DG III – Indústria, Editado por Richard Keegan, 1998.

European Foundation for Quality Managment, www.efqm.org  

SGS-Thomson, European Quality Award Application, 1997.