Wastall, P. (1989). Scales and Arpeggios for Trombone and Euphonium: Ed. by Peter Wastall. Boosey & Hawkes.
Lua i Stíl Chicago (17ú heag.)Wastall, Peter. Scales and Arpeggios for Trombone and Euphonium: Ed. by Peter Wastall. [London]: Boosey & Hawkes, 1989.
Lua MLA (8ú heag.)Wastall, Peter. Scales and Arpeggios for Trombone and Euphonium: Ed. by Peter Wastall. Boosey & Hawkes, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.