Podstawski, Robert, and Krzysztof Borysławski. “INFLUENCE OF PE TEACHERS’ QUALIFICATIONS ON THE MOTOR ABILITIES OF EARLY SCHOOL-AGE CHILDREN”. Physical education of students 18, no. 1 (February 28, 2014): 56-63. Accessed December 5, 2021. https://sportedu.org.ua/index.php/PES/article/view/224.