German-born U.S. civil engineer, John Roebling was a pioneer in the design of steel suspension bridges. His best known work is the Brooklyn Bridge.
John Roebling. (2013). The Biography Channel website. Retrieved 07:52, May 25, 2013, from http://www.biography.com/people/john-augustus-roebling-9461893.
John Roebling. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/john-augustus-roebling-9461893 [Accessed 25 May 2013].
"John Roebling." 2013. The Biography Channel website. May 25 2013, 07:52 http://www.biography.com/people/john-augustus-roebling-9461893.
"John Roebling," The Biography Channel website, 2013, http://www.biography.com/people/john-augustus-roebling-9461893 [accessed May 25, 2013].
"John Roebling," The Biography Channel website, http://www.biography.com/people/john-augustus-roebling-9461893 (accessed May 25, 2013).
John Roebling [Internet]. The Biography Channel website; 2013 [cited 2013 May 25] Available from: http://www.biography.com/people/john-augustus-roebling-9461893.
John Roebling, http://www.biography.com/people/john-augustus-roebling-9461893 (last visited May 25, 2013).
John Roebling. The Biography Channel website. 2013. Available at: http://www.biography.com/people/john-augustus-roebling-9461893. Accessed May 25, 2013.