Harz, F. (1987). Picking Jazzguitar. Ed. Metropol.
Lua i Stíl Chicago (17ú heag.)Harz, Fred. Picking Jazzguitar. Köln: Ed. Metropol, 1987.
Lua MLA (8ú heag.)Harz, Fred. Picking Jazzguitar. Ed. Metropol, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.