APA (7th ed.) Citation

Kern, F., Keveren, P., Rejino, M., & Harrington, K. (1997). Piano theory workbook. Hal Leonard.

Chicago Style (17th ed.) Citation

Kern, Fred, Phillip Keveren, Mona Rejino, and Karen Harrington. Piano Theory Workbook. Milwaukee, Wis: Hal Leonard, 1997.

MLA (9th ed.) Citation

Kern, Fred, et al. Piano Theory Workbook. Hal Leonard, 1997.