Abel, C. (2003). Sky high: Vertical architecture. Royal Academy of Arts.
Cita Chicago (17th ed.)Abel, Chris. Sky High: Vertical Architecture. London: Royal Academy of Arts, 2003.
Cita MLA (8th ed.)Abel, Chris. Sky High: Vertical Architecture. Royal Academy of Arts, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.