Whistler, H. S. (1940). Bell Lyra: A fundamental course for individual or like-instrument class instruction / Harvey S.Whistler. Rubank.
Lua i Stíl Chicago (17ú heag.)Whistler, Harvey S. Bell Lyra: A Fundamental Course for Individual or Like-instrument Class Instruction / Harvey S.Whistler. Miami, Fl.: Rubank, 1940.
Lua MLA (8ú heag.)Whistler, Harvey S. Bell Lyra: A Fundamental Course for Individual or Like-instrument Class Instruction / Harvey S.Whistler. Rubank, 1940.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.