↑"The Belgian Constitution (English version)"(PDF). Belgian House of Representatives. January 2009. Retrieved 5 June 2009. Article 3: Belgium comprises three Regions: the Flemish Region, the Walloon Region and the Brussels Region. Article 4: Belgium comprises four linguistic regions: the Dutch-speaking region, the French speaking region, the bilingual region of Brussels-Capital and the German-speaking region.
↑"Brussels-Capital Region: Creation". Centre d'Informatique pour la Région Bruxelloise (Brussels Regional Informatics Center). 2009. Retrieved 5 June 2009. Since 18 June 1989, the date of the first regional elections, the Brussels-Capital Region has been an autonomous region comparable to the Flemish and Walloon Regions. (All text and all but one graphic show the English name as Brussels-Capital Region.)
↑It is the de facto EU capital as it hosts all major political institutions—though Parliament formally votes in Strasbourg, most political work is carried out in Brussels—and as such is considered the capital by definition. However, it should be noted that it is not formally declared in that language, though its position is spelled out in the Treaty of Amsterdam. See the section dedicated to this issue.
↑Demey, Thierry (2007). Brussels, capital of Europe. S. Strange (trans.). Brussels: Badeaux. ISBN2-9600414-2-9.