Schoenfeld, M., & Mcpherson, B. (2002). Once Upon a Time. Hal Leonard Music Publishing.
芝加哥风格引文Schoenfeld, Mark, 与 Barri Mcpherson. Once Upon a Time. Wisconsin, United States: Hal Leonard Music Publishing, 2002.
MLA引文Schoenfeld, Mark, 与 Barri Mcpherson. Once Upon a Time. Hal Leonard Music Publishing, 2002.
警告：这些引文格式不一定是100％准确.