Young, P. M. (1967). Great ideas in music. Maxwell.
Lua i Stíl Chicago (17ú heag.)Young, Percy Marshall. Great Ideas in Music. London: Maxwell, 1967.
Lua MLA (9ú heag.)Young, Percy Marshall. Great Ideas in Music. Maxwell, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.