Kitt, T., & Yorkey, B. (2009). Vocal selections from Next to normal: An original musical. Alfred.
Citazione stile Chigago Style (17a edizione)Kitt, Tom, e Brian Yorkey. Vocal Selections from Next to Normal: An Original Musical. Van Nuys, CA: Alfred, 2009.
Citatione MLA (9a ed.)Kitt, Tom, e Brian Yorkey. Vocal Selections from Next to Normal: An Original Musical. Alfred, 2009.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.