BRACEFIELD, H. Review of 1972/08/13 Concert at Roundhouse, London. HPSCHD: John Cage. Contact: A Journal for Contemporary Music (1971-1990), [S. l.], n. 5, 1972. DOI: 10.25602/GOLD.cj.v0i5.899. Disponível em: https://journals.gold.ac.uk/index.php/contactjournal/article/view/contactjournal05_p32. Acesso em: 24 feb. 2024.