Rodgers, R., Hammerstein, O., & Walker, D. (2019). Exit of Billy & heavenly friends. Concord Theatricaks.
芝加哥风格引文Rodgers, Richard, Oscar Hammerstein, 与 Don Walker. Exit of Billy & Heavenly Friends. [S. l.]: Concord Theatricaks, 2019.
MLA引文Rodgers, Richard, et al. Exit of Billy & Heavenly Friends. Concord Theatricaks, 2019.
警告：这些引文格式不一定是100％准确.