ROBERTS, D. L. Experimental Music Catalogue: Vocal Anthology, Bryn Harris Anthology-72, Nature Study Notes. Contact: A Journal for Contemporary Music (1971-1990), [S. l.], n. 6, 1973. DOI: 10.25602/GOLD.cj.v0i6.911. Disponível em: https://journals.gold.ac.uk/index.php/contactjournal/article/view/contactjournal06_25-27. Acesso em: 25 apr. 2024.