APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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