Ashley, T. (1999). Richard Strauss. Phaidon Press.
Lua i Stíl Chicago (17ú heag.)Ashley, Tim. Richard Strauss. London: Phaidon Press, 1999.
Lua MLA (9ú heag.)Ashley, Tim. Richard Strauss. Phaidon Press, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.