APA (7th ed.) Citation

Weingardt, R. (2009). Circles in the sky: The life and times of George Ferris. American Society of Civil Engineers.

Chicago Style (17th ed.) Citation

Weingardt, Richard. Circles in the Sky: The Life and Times of George Ferris. Reston, VA: American Society of Civil Engineers, 2009.

MLA (9th ed.) Citation

Weingardt, Richard. Circles in the Sky: The Life and Times of George Ferris. American Society of Civil Engineers, 2009.