Liu, Xiaojing, and Yulong Li. “A Qualitative Study of the Continuing Professional Development Activities of the Chinese Private Kindergarten teachers’ Professional Competence”. Journal of Education Culture and Society 12, no. 1 (June 17, 2021): 540–554. Accessed September 20, 2021. https://jecs.pl/index.php/jecs/article/view/1270.