McCallion, M. (1998). The voice book: For everyone who wants to make the most of their voice ([New ed.].). Faber.
Chicago-viite (17. p.)McCallion, Michael. The Voice Book: For Everyone Who Wants to Make the Most of Their Voice. [New ed.]. London: Faber, 1998.
MLA-viite (9. p.)McCallion, Michael. The Voice Book: For Everyone Who Wants to Make the Most of Their Voice. [New ed.]. Faber, 1998.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.