CAGE, John. Cage-Interview Nr. 2 / No. 2.; Almeida Contemporary Festival, London, 1990; Various afternoon and evening moments, Almeida Bar, 17/6/90; Sweeney-Turner im Gespräch mit John Cage [Online-Einrichtung: Clemens Gresser]. European Journal of Musicology, Bern, v. 5, 2002. DOI: 10.5450/ejm.2002.5.6134. Disponível em: https://bop.unibe.ch/EJM/article/view/6134. Acesso em: 2 feb. 2025.