Παραπομπή σε μορφή APA (7η εκδ.)

Gerle, A., & Gerle, A. (2018). Music essentials for singers and actors: Fundamentals of notation, sight singing, and music theory. Hal Leonard.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gerle, Andrew, και Andrew Gerle. Music Essentials for Singers and Actors: Fundamentals of Notation, Sight Singing, and Music Theory. Milwaukee, WI: Hal Leonard, 2018.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gerle, Andrew, και Andrew Gerle. Music Essentials for Singers and Actors: Fundamentals of Notation, Sight Singing, and Music Theory. Hal Leonard, 2018.