Wittkower, R. (1998). Architectural principlesin the age of humanism. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Wittkower, Rudolf. Architectural Principlesin the Age of Humanism. John Wiley & Sons, 1998.
Lua MLA (8ú heag.)Wittkower, Rudolf. Architectural Principlesin the Age of Humanism. John Wiley & Sons, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.