Leikvoll , Katarzyna Julia. «Non-Compulsory Instrumental Music Education in Poland and Norway: Perspectives on Accessibility, Curriculum Framework and Learning Goals in Two Different Music Education Systems». Nordic Journal of Comparative and International Education (NJCIE) 9, no. 3 (juli 22, 2025). åpnet oktober 4, 2025. https://journals.oslomet.no/nordiccie/article/view/6326.