Bertolucci, C. (2002). Spanish Steps: External Staircase, Toledo, Spain : Architekten: Lapena & Torres. The Architectural Review.
Chicago-Zitierstil (17. Ausg.)Bertolucci, Carla. "Spanish Steps: External Staircase, Toledo, Spain : Architekten: Lapena & Torres." The Architectural Review 2002.
MLA-Zitierstil (8. Ausg.)Bertolucci, Carla. "Spanish Steps: External Staircase, Toledo, Spain : Architekten: Lapena & Torres." The Architectural Review, 2002.
警告：這些引文格式不一定是100％准確.