Horvit, M., Koozin, T., & Nelson, R. (2001). Music for ear training: CD-ROM and workbook. Wadsworth.
Lua i Stíl Chicago (17ú heag.)Horvit, Michael, Timothy Koozin, agus Robert Nelson. Music for Ear Training: CD-ROM and Workbook. Belmont, Calif: Wadsworth, 2001.
Lua MLA (9ú heag.)Horvit, Michael, et al. Music for Ear Training: CD-ROM and Workbook. Wadsworth, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.