Harvard, P. (2013). Acting through song: Techniques and exercises for musical-theatre actors. Nick Hern.
Lua i Stíl Chicago (17ú heag.)Harvard, Paul. Acting Through Song: Techniques and Exercises for Musical-theatre Actors. London: Nick Hern, 2013.
Lua MLA (9ú heag.)Harvard, Paul. Acting Through Song: Techniques and Exercises for Musical-theatre Actors. Nick Hern, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.