Berkowitz, S., Fontrier, G., & Kraft, L. (1960). A new approach to sight singing. Norton.
Lua i Stíl Chicago (17ú heag.)Berkowitz, Sol, Gabriel Fontrier, agus Leo Kraft. A New Approach to Sight Singing. New York: Norton, 1960.
Lua MLA (9ú heag.)Berkowitz, Sol, et al. A New Approach to Sight Singing. Norton, 1960.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.