Linus Pauling was a theoretical physical chemist who became the only person to have won two unshared Nobel Prizes.
Linus Pauling. (2013). The Biography Channel website. Retrieved 09:44, May 19, 2013, from http://www.biography.com/people/linus-pauling-9435195.
Linus Pauling. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/linus-pauling-9435195 [Accessed 19 May 2013].
"Linus Pauling." 2013. The Biography Channel website. May 19 2013, 09:44 http://www.biography.com/people/linus-pauling-9435195.
"Linus Pauling," The Biography Channel website, 2013, http://www.biography.com/people/linus-pauling-9435195 [accessed May 19, 2013].
"Linus Pauling," The Biography Channel website, http://www.biography.com/people/linus-pauling-9435195 (accessed May 19, 2013).
Linus Pauling [Internet]. The Biography Channel website; 2013 [cited 2013 May 19] Available from: http://www.biography.com/people/linus-pauling-9435195.
Linus Pauling, http://www.biography.com/people/linus-pauling-9435195 (last visited May 19, 2013).
Linus Pauling. The Biography Channel website. 2013. Available at: http://www.biography.com/people/linus-pauling-9435195. Accessed May 19, 2013.