Czubik P. Evolution of Foreign Service Activities in Treaties and National Legislation. In: Changes in the Structure and Scope of Foreign Service Activity [Internet]. Miskolc–Budapest: Studies of the Central European Professors’ Network; 2026 [cited 2026 Nov. 11]. pp. 21-66. Available from: https://books.ceapublishing.hu/index.php/ceaprofnet/catalog/book/71/chapter/783