ROBERTS, D. Hugh Davies: Instrument Maker. Contact: A Journal for Contemporary Music (1971-1990), [S. l.], n. 17, 1977. DOI: 10.25602/GOLD.cj.v0i17.1075. Disponível em: https://journals.gold.ac.uk/index.php/contactjournal/article/view/contactjournal17_p8-13. Acesso em: 24 feb. 2024.