Cita APA (7a ed.)

Wittkower, R. (1971). Architectural Principles in the Age of Humanism. W.W. Norton and Company.

Cita Chicago Style (17a ed.)

Wittkower, Rudolf. Architectural Principles in the Age of Humanism. New York: W.W. Norton and Company, 1971.

Cita MLA (9a ed.)

Wittkower, Rudolf. Architectural Principles in the Age of Humanism. W.W. Norton and Company, 1971.