Heath Ledger dies of accidental prescription drug overdose. (2013). The History Channel website. Retrieved 3:07, May 25, 2013, from http://www.history.com/this-day-in-history/heath-ledger-dies-of-accidental-prescription-drug-overdose.
Heath Ledger dies of accidental prescription drug overdose. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/heath-ledger-dies-of-accidental-prescription-drug-overdose [Accessed 25 May 2013].
“Heath Ledger dies of accidental prescription drug overdose.” 2013. The History Channel website. May 25 2013, 3:07 http://www.history.com/this-day-in-history/heath-ledger-dies-of-accidental-prescription-drug-overdose.
“Heath Ledger dies of accidental prescription drug overdose,” The History Channel website, 2013, http://www.history.com/this-day-in-history/heath-ledger-dies-of-accidental-prescription-drug-overdose [accessed May 25, 2013].
“Heath Ledger dies of accidental prescription drug overdose,” The History Channel website, http://www.history.com/this-day-in-history/heath-ledger-dies-of-accidental-prescription-drug-overdose (accessed May 25, 2013).
Heath Ledger dies of accidental prescription drug overdose [Internet]. The History Channel website; 2013 [cited 2013 May 25] Available from: http://www.history.com/this-day-in-history/heath-ledger-dies-of-accidental-prescription-drug-overdose.
Heath Ledger dies of accidental prescription drug overdose, http://www.history.com/this-day-in-history/heath-ledger-dies-of-accidental-prescription-drug-overdose (last visited May 25, 2013).
Heath Ledger dies of accidental prescription drug overdose. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/heath-ledger-dies-of-accidental-prescription-drug-overdose. Accessed May 25, 2013.