(1990). Keyboard companion: A practical magazine on early-level piano study. Keyboard Companion.
Citazione stile Chigago Style (17a edizione)Keyboard Companion: A Practical Magazine on Early-level Piano Study. Los Angeles, CA: Keyboard Companion, 1990.
Citatione MLA (9a ed.)Keyboard Companion: A Practical Magazine on Early-level Piano Study. Keyboard Companion, 1990.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.