Walters, R. (1986). Duets: Comp. and ed. by Richard Walters. Hal Leonard.
Chicago-Zitierstil (17. Ausg.)Walters, Richard. Duets: Comp. and Ed. by Richard Walters. Milwaukee, Wis.: Hal Leonard, 1986.
MLA-Zitierstil (8. Ausg.)Walters, Richard. Duets: Comp. and Ed. by Richard Walters. Hal Leonard, 1986.
警告：这些引文格式不一定是100％准确.