Federal Constitution, article 4 (页面存档备份,存于互联网档案馆), "National languages" : National languages are German, French, Italian and Romansh; Federal Constitution, article 70 (页面存档备份,存于互联网档案馆), "Languages", paragraph 1: The official languages of the Confederation are German, French and Italian. Romansh shall be an official language for communicating with persons of Romansh language.
Federal Constitution, article 4 (页面存档备份,存于互联网档案馆), "National languages" : National languages are German, French, Italian and Romansh; Federal Constitution, article 70 (页面存档备份,存于互联网档案馆), "Languages", paragraph 1: The official languages of the Confederation are German, French and Italian. Romansh shall be an official language for communicating with persons of Romansh language.