Da Vinci notebook sells for over 5 million. (2013). The History Channel website. Retrieved 2:12, May 25, 2013, from http://www.history.com/this-day-in-history/da-vinci-notebook-sells-for-over-5-million.
Da Vinci notebook sells for over 5 million. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/da-vinci-notebook-sells-for-over-5-million [Accessed 25 May 2013].
“Da Vinci notebook sells for over 5 million.” 2013. The History Channel website. May 25 2013, 2:12 http://www.history.com/this-day-in-history/da-vinci-notebook-sells-for-over-5-million.
“Da Vinci notebook sells for over 5 million,” The History Channel website, 2013, http://www.history.com/this-day-in-history/da-vinci-notebook-sells-for-over-5-million [accessed May 25, 2013].
“Da Vinci notebook sells for over 5 million,” The History Channel website, http://www.history.com/this-day-in-history/da-vinci-notebook-sells-for-over-5-million (accessed May 25, 2013).
Da Vinci notebook sells for over 5 million [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/this-day-in-history/da-vinci-notebook-sells-for-over-5-million.
Da Vinci notebook sells for over 5 million, http://www.history.com/this-day-in-history/da-vinci-notebook-sells-for-over-5-million (last visited May 25, 2013).
Da Vinci notebook sells for over 5 million. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/da-vinci-notebook-sells-for-over-5-million. Accessed May 25, 2013.