Portny, Eugeniusz. „Chapter IV. Chairmanship of the Organization for Security and Cooperation in Europe – Institutional and Historical Context . 65”. W Poland’s Chairmanship in the Organization for Security and Co-Operation in Europe in 2022: Objectives and Their Implementation in the Face of the Russian-Ukrainian War, zredagowane przez Michał Dulak, 65–87. Poland: Wydawnictwo Księgarnia Akademicka, 2025. Dostęp styczeń 1, 2026. https://books.akademicka.pl/publishing/catalog/book/760/chapter/16738.