Baird demonstrates TV. (2013). The History Channel website. Retrieved 12:28, June 19, 2013, from http://www.history.com/this-day-in-history/baird-demonstrates-tv.
Baird demonstrates TV. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/baird-demonstrates-tv [Accessed 19 Jun 2013].
“Baird demonstrates TV.” 2013. The History Channel website. Jun 19 2013, 12:28 http://www.history.com/this-day-in-history/baird-demonstrates-tv.
“Baird demonstrates TV,” The History Channel website, 2013, http://www.history.com/this-day-in-history/baird-demonstrates-tv [accessed Jun 19, 2013].
“Baird demonstrates TV,” The History Channel website, http://www.history.com/this-day-in-history/baird-demonstrates-tv (accessed Jun 19, 2013).
Baird demonstrates TV [Internet]. The History Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.history.com/this-day-in-history/baird-demonstrates-tv.
Baird demonstrates TV, http://www.history.com/this-day-in-history/baird-demonstrates-tv (last visited Jun 19, 2013).
Baird demonstrates TV. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/baird-demonstrates-tv. Accessed Jun 19, 2013.