(1990). Keyboard companion: A practical magazine on early-level piano study. Keyboard Companion.
Chicago-čujuhus (17. p.)Keyboard Companion: A Practical Magazine on Early-level Piano Study. Los Angeles, CA: Keyboard Companion, 1990.
MLA-čujuhus (9. p.)Keyboard Companion: A Practical Magazine on Early-level Piano Study. Keyboard Companion, 1990.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.