STENHACH, Nadiia. “The Struggle for National Sovereignty and International Status of the Ukrainian Cossack State (Second Half of the XVII–XVIII Centuries)”. University Scientific Notes, no. 2 (80) (July 3, 2021): 6-17. Accessed May 9, 2025. https://unz.univer.km.ua/article/view/80_6-17.