Havrilova, Liudmyla H. “PRINCIPLES OF MUSIC TEACHERS PROFESSIONAL COMPETENCE FORMATION BY MEANS OF MULTIMEDIA TECHNOLOGIES”. Information Technologies and Learning Tools 46, no. 2 (April 8, 2015): 45–55. Accessed April 27, 2024. https://journal.iitta.gov.ua/index.php/itlt/article/view/1210.