Walters, R. (2017). The Singer's Musical Theatre Anthology: Duets - Volume 4: Duets - Volume 4. Hal Leonard Corporation.
Chicago-viite (17. p.)Walters, Richard. The Singer's Musical Theatre Anthology: Duets - Volume 4: Duets - Volume 4. Milwaukee, WI, United States: Hal Leonard Corporation, 2017.
MLA-viite (9. p.)Walters, Richard. The Singer's Musical Theatre Anthology: Duets - Volume 4: Duets - Volume 4. Hal Leonard Corporation, 2017.
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