Fermi produces the first nuclear chain reaction. (2013). The History Channel website. Retrieved 8:59, May 18, 2013, from http://www.history.com/this-day-in-history/fermi-produces-the-first-nuclear-chain-reaction.
Fermi produces the first nuclear chain reaction. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/fermi-produces-the-first-nuclear-chain-reaction [Accessed 18 May 2013].
“Fermi produces the first nuclear chain reaction.” 2013. The History Channel website. May 18 2013, 8:59 http://www.history.com/this-day-in-history/fermi-produces-the-first-nuclear-chain-reaction.
“Fermi produces the first nuclear chain reaction,” The History Channel website, 2013, http://www.history.com/this-day-in-history/fermi-produces-the-first-nuclear-chain-reaction [accessed May 18, 2013].
“Fermi produces the first nuclear chain reaction,” The History Channel website, http://www.history.com/this-day-in-history/fermi-produces-the-first-nuclear-chain-reaction (accessed May 18, 2013).
Fermi produces the first nuclear chain reaction [Internet]. The History Channel website; 2013 [cited 2013 May 18] Available from: http://www.history.com/this-day-in-history/fermi-produces-the-first-nuclear-chain-reaction.
Fermi produces the first nuclear chain reaction, http://www.history.com/this-day-in-history/fermi-produces-the-first-nuclear-chain-reaction (last visited May 18, 2013).
Fermi produces the first nuclear chain reaction. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/fermi-produces-the-first-nuclear-chain-reaction. Accessed May 18, 2013.