WU, Di. Comparison of Beethoven’s 32 Variations in C Minor. BCP Education & Psychology, [S. l.], v. 9, p. 1–6, 2023. DOI: 10.54691/bcpep.v9i.4600. Disponível em: https://bcpublication.org/index.php/EP/article/view/4600. Acesso em: 18 apr. 2026.