Nelson, J. (2017). The voice exercise book: A guide to healthy and effective voice use. National Theatre Publishing.
Lua i Stíl Chicago (17ú heag.)Nelson, Jeannette. The Voice Exercise Book: A Guide to Healthy and Effective Voice Use. London: National Theatre Publishing, 2017.
Lua MLA (9ú heag.)Nelson, Jeannette. The Voice Exercise Book: A Guide to Healthy and Effective Voice Use. National Theatre Publishing, 2017.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.