Оstanina Nina. “CONTINUOUS EDUCATION AS FACTOR OF INCREASE OF PROFESSIONAL LEVEL”. Actual Problems in the System of Education: General Secondary Education Institution – Pre-University Training – Higher Education Institution 1, no. 3 (July 25, 2023): 494–502. Accessed October 6, 2024. https://jrnl.nau.edu.ua/index.php/APSE/article/view/17733.