VAKHIDOVNA , V. S. . Guide to competent work of academic voice and study of the art of working on overtones in the production. Miasto Przyszłości, [S. l.], v. 54, p. 1244–1250, 2024. Disponível em: https://miastoprzyszlosci.com.pl/index.php/mp/article/view/5408. Acesso em: 10 mar. 2025.