Sondheim, S. (1973). Send in the Clowns. Hal Leonard Music Publishing.
芝加哥风格引文Sondheim, Stephen. Send in the Clowns. Wisconsin, United States: Hal Leonard Music Publishing, 1973.
MLA引文Sondheim, Stephen. Send in the Clowns. Hal Leonard Music Publishing, 1973.
警告：这些引文格式不一定是100％准确.