Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.