Nobel prize winning biochemist Axel Hugo Theodor Theorell 's study of enzymes led to an understanding of how organisms use nutrients to make usable energy.
Axel Hugo Theodor Theorell. (2013). The Biography Channel website. Retrieved 09:23, Jun 18, 2013, from http://www.biography.com/people/hugo-theorell-9505252.
Axel Hugo Theodor Theorell. [Internet]. 2013. The Biography Channel website. Available from: http://www.biography.com/people/hugo-theorell-9505252 [Accessed 18 Jun 2013].
"Axel Hugo Theodor Theorell." 2013. The Biography Channel website. Jun 18 2013, 09:23 http://www.biography.com/people/hugo-theorell-9505252.
"Axel Hugo Theodor Theorell," The Biography Channel website, 2013, http://www.biography.com/people/hugo-theorell-9505252 [accessed Jun 18, 2013].
"Axel Hugo Theodor Theorell," The Biography Channel website, http://www.biography.com/people/hugo-theorell-9505252 (accessed Jun 18, 2013).
Axel Hugo Theodor Theorell [Internet]. The Biography Channel website; 2013 [cited 2013 Jun 18] Available from: http://www.biography.com/people/hugo-theorell-9505252.
Axel Hugo Theodor Theorell, http://www.biography.com/people/hugo-theorell-9505252 (last visited Jun 18, 2013).
Axel Hugo Theodor Theorell. The Biography Channel website. 2013. Available at: http://www.biography.com/people/hugo-theorell-9505252. Accessed Jun 18, 2013.