Barton, R., & Dal Vera, R. (2017). Voice: Onstage and off (Third edition.). Routledge.
Chicagoスタイル(17版)引用形式Barton, Robert, , Rocco Dal Vera. Voice: Onstage and off. Third edition. New York, NY: Routledge, 2017.
MLA(9版)引用形式Barton, Robert, , Rocco Dal Vera. Voice: Onstage and off. Third edition. Routledge, 2017.
警告: この引用は必ずしも正確ではありません.