(1990). Keyboard companion: A practical magazine on early-level piano study. Keyboard Companion.
Cita Chicago (17th ed.)Keyboard Companion: A Practical Magazine on Early-level Piano Study. Los Angeles, CA: Keyboard Companion, 1990.
Cita MLA (9th ed.)Keyboard Companion: A Practical Magazine on Early-level Piano Study. Keyboard Companion, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.