Physicist John Bardeen was co-winner of the Nobel Prize for Physics in 1956 for inventing the transistor, and in 1972 for the theory of superconductivity.
John Bardeen. (2013). The Biography Channel website. Retrieved 09:43, May 18, 2013, from http://www.biography.com/people/john-bardeen-9198809.
John Bardeen. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/john-bardeen-9198809 [Accessed 18 May 2013].
"John Bardeen." 2013. The Biography Channel website. May 18 2013, 09:43 http://www.biography.com/people/john-bardeen-9198809.
"John Bardeen," The Biography Channel website, 2013, http://www.biography.com/people/john-bardeen-9198809 [accessed May 18, 2013].
"John Bardeen," The Biography Channel website, http://www.biography.com/people/john-bardeen-9198809 (accessed May 18, 2013).
John Bardeen [Internet]. The Biography Channel website; 2013 [cited 2013 May 18] Available from: http://www.biography.com/people/john-bardeen-9198809.
John Bardeen, http://www.biography.com/people/john-bardeen-9198809 (last visited May 18, 2013).
John Bardeen. The Biography Channel website. 2013. Available at: http://www.biography.com/people/john-bardeen-9198809. Accessed May 18, 2013.