Earthquake takes heavy toll on Lisbon. (2013). The History Channel website. Retrieved 2:57, June 19, 2013, from http://www.history.com/this-day-in-history/earthquake-takes-heavy-toll-on-lisbon.
Earthquake takes heavy toll on Lisbon. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/earthquake-takes-heavy-toll-on-lisbon [Accessed 19 Jun 2013].
“Earthquake takes heavy toll on Lisbon.” 2013. The History Channel website. Jun 19 2013, 2:57 http://www.history.com/this-day-in-history/earthquake-takes-heavy-toll-on-lisbon.
“Earthquake takes heavy toll on Lisbon,” The History Channel website, 2013, http://www.history.com/this-day-in-history/earthquake-takes-heavy-toll-on-lisbon [accessed Jun 19, 2013].
“Earthquake takes heavy toll on Lisbon,” The History Channel website, http://www.history.com/this-day-in-history/earthquake-takes-heavy-toll-on-lisbon (accessed Jun 19, 2013).
Earthquake takes heavy toll on Lisbon [Internet]. The History Channel website; 2013 [cited 2013 Jun 19] Available from: http://www.history.com/this-day-in-history/earthquake-takes-heavy-toll-on-lisbon.
Earthquake takes heavy toll on Lisbon, http://www.history.com/this-day-in-history/earthquake-takes-heavy-toll-on-lisbon (last visited Jun 19, 2013).
Earthquake takes heavy toll on Lisbon. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/earthquake-takes-heavy-toll-on-lisbon. Accessed Jun 19, 2013.