Source: https://www.iefpedia.com/france/wp-content/uploads/2011/07/Le-management-de-la-qualit%C3%A9-totale-La-qualit%C3%A9-totale-les-outils-du-d%C3%A9veloppement-de-la-performance-des-entreprises-RACHEDI-ABDELKADER1.pdf