HEATON, R. ISAM Monographs. Contact: A Journal for Contemporary Music (1971-1990), [S. l.], n. 25, 1982. DOI: 10.25602/GOLD.cj.v0i25.1216. Disponível em: https://gold07a0101.cs.ulcc.ac.uk/index.php/contactjournal/article/view/contactjournal25_p39-41. Acesso em: 22 nov. 2024.