Citazione Stile APA (7a Edizione)

Schoenfeld, M., & Mcpherson, B. (2002). Once Upon a Time. Hal Leonard Music Publishing.

Citazione stile Chigago Style (17a edizione)

Schoenfeld, Mark, e Barri Mcpherson. Once Upon a Time. Wisconsin, United States: Hal Leonard Music Publishing, 2002.

Citatione MLA (9a ed.)

Schoenfeld, Mark, e Barri Mcpherson. Once Upon a Time. Hal Leonard Music Publishing, 2002.