JORDÁN, Éva-Elena. “THE THEORY AND PRACTICE OF OPERETTA ROLES”. Studia Universitatis Babeş-Bolyai Musica 64, no. 1 (June 20, 2019): 85–94. Accessed May 9, 2025. https://studia.reviste.ubbcluj.ro/index.php/subbmusica/article/view/2059.