Freedom of Association/History/Country sources/Croatia
Article 43 of the 1991 Croatia Constitution states: "Everyone shall be guaranteed the right to freedom of association for the purposes of protection of their interests or promotion of their social, economic, political, national, cultural and other convictions and objectives. For this purpose, everyone may freely form trade unions and other associations, join them or leave them, in conformity with law. The exercise of this right shall be restricted by the prohibition of any violent threat to the democratic constitutional order and independence, unity and territorial integrity of the Republic of Croatia." https://www.constituteproject.org/constitution/Croatia_2013?lang=en
What is the oldest written source in this country that mentions this right?