Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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