Berrios, R., & Ridley, A. Nietzsche: Ruben Berrios. Aaron Ridley. The Routledge companion to aesthetics.(2004).
Lua i Stíl Chicago (17ú heag.)Berrios, Ruben, agus Aaron Ridley. "Nietzsche: Ruben Berrios. Aaron Ridley." The Routledge Companion to Aesthetics.(2004) .
Lua MLA (8ú heag.)Berrios, Ruben, agus Aaron Ridley. "Nietzsche: Ruben Berrios. Aaron Ridley." The Routledge Companion to Aesthetics.(2004), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.