EAST, L. Tippett and "The Knot Garden". Contact: A Journal for Contemporary Music (1971-1990), [S. l.], n. 6, 1973. DOI: 10.25602/GOLD.cj.v0i6.913. Disponível em: https://journals.gold.ac.uk/index.php/contactjournal/article/view/contactjournal06_p31-34. Acesso em: 5 may. 2024.