Berrios, R., & Ridley, A. Nietzsche: Ruben Berrios. Aaron Ridley. The Routledge companion to aesthetics.(2005).
Lua i Stíl Chicago (17ú heag.)Berrios, Ruben, agus Aaron Ridley. "Nietzsche: Ruben Berrios. Aaron Ridley." The Routledge Companion to Aesthetics.(2005) .
Lua MLA (8ú heag.)Berrios, Ruben, agus Aaron Ridley. "Nietzsche: Ruben Berrios. Aaron Ridley." The Routledge Companion to Aesthetics.(2005), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.