Citace podle APA (7th ed.)

Caldwell, R., & Wall, J. (2001). Excellence in singing: Multilevel learning and multilevel of teaching. Caldwell Pub.

Citace podle Chicago (17th ed.)

Caldwell, Robert, a Joan Wall. Excellence in Singing: Multilevel Learning and Multilevel of Teaching. Redmond, WA: Caldwell Pub, 2001.

Citace podle MLA (9th ed.)

Caldwell, Robert, a Joan Wall. Excellence in Singing: Multilevel Learning and Multilevel of Teaching. Caldwell Pub, 2001.

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