Purdy, S., & Foster, H. (2016). Musical theatre song: A comprehensive course in selection, preparation and presentation for the modern performer. Bloomsbury Methuen Drama.
Lua i Stíl Chicago (17ú heag.)Purdy, Stephen, agus Hunter Foster. Musical Theatre Song: A Comprehensive Course in Selection, Preparation and Presentation for the Modern Performer. London: Bloomsbury Methuen Drama, 2016.
Lua MLA (9ú heag.)Purdy, Stephen, agus Hunter Foster. Musical Theatre Song: A Comprehensive Course in Selection, Preparation and Presentation for the Modern Performer. Bloomsbury Methuen Drama, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.