Gerle, A., & Gerle, A. (2018). Music essentials for singers and actors: Fundamentals of notation, sight singing, and music theory. Hal Leonard.
Lua i Stíl Chicago (17ú heag.)Gerle, Andrew, agus Andrew Gerle. Music Essentials for Singers and Actors: Fundamentals of Notation, Sight Singing, and Music Theory. Milwaukee, WI: Hal Leonard, 2018.
Lua MLA (9ú heag.)Gerle, Andrew, agus Andrew Gerle. Music Essentials for Singers and Actors: Fundamentals of Notation, Sight Singing, and Music Theory. Hal Leonard, 2018.
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