Wittkower, R. (1988). Architectural principles in the age of humanism. Academy Editions.
Citazione stile Chigago Style (17a edizione)Wittkower, Rudolf. Architectural Principles in the Age of Humanism. London: Academy Editions, 1988.
Citatione MLA (9a ed.)Wittkower, Rudolf. Architectural Principles in the Age of Humanism. Academy Editions, 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.