Cita APA (7a ed.)

Harrison, S. D., & O'Bryan, J. (2014). Teaching singing in the 21st century. Springer.

Cita Chicago Style (17a ed.)

Harrison, Scott David, y Jessica O'Bryan. Teaching Singing in the 21st Century. Dordrecht: Springer, 2014.

Cita MLA (9a ed.)

Harrison, Scott David, y Jessica O'Bryan. Teaching Singing in the 21st Century. Springer, 2014.