[138: A Quality Framework for Services of General Interest in Europe COM(2011) 900 final.][139: http://ec.europa.eu/services_general_interest/index_en.htm]
[138: Um enquadramento de qualidade para os serviços de interesse geral na Europa, COM(2011) 900 final.][139: https://ec.europa.eu/info/topics/single-market/services-general-interest_pt]