Cita APA (7th ed.)
Condit, C. W. The Rise of the skyscraper.
Cita Chicago (17th ed.)
Condit, Carl Wilbur. The Rise of the Skyscraper.
Cita MLA (9th ed.)
Condit, Carl Wilbur. The Rise of the Skyscraper.
Atenció: Aquestes cites poden no estar 100% correctes.