SERENDERO, D. Wagner y la Tetralogía. Revista Musical Chilena, [S. l.], v. 17, n. 84, p. p. 8–18, 1963. Disponível em: https://revistamusicalchilena.uchile.cl/index.php/RMCH/article/view/13788. Acesso em: 4 may. 2024.