Mikhail Gorbachev becomes head of Supreme Soviet. (2013). The History Channel website. Retrieved 7:10, June 18, 2013, from http://www.history.com/this-day-in-history/mikhail-gorbachev-becomes-head-of-supreme-soviet.
Mikhail Gorbachev becomes head of Supreme Soviet. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/mikhail-gorbachev-becomes-head-of-supreme-soviet [Accessed 18 Jun 2013].
“Mikhail Gorbachev becomes head of Supreme Soviet.” 2013. The History Channel website. Jun 18 2013, 7:10 http://www.history.com/this-day-in-history/mikhail-gorbachev-becomes-head-of-supreme-soviet.
“Mikhail Gorbachev becomes head of Supreme Soviet,” The History Channel website, 2013, http://www.history.com/this-day-in-history/mikhail-gorbachev-becomes-head-of-supreme-soviet [accessed Jun 18, 2013].
“Mikhail Gorbachev becomes head of Supreme Soviet,” The History Channel website, http://www.history.com/this-day-in-history/mikhail-gorbachev-becomes-head-of-supreme-soviet (accessed Jun 18, 2013).
Mikhail Gorbachev becomes head of Supreme Soviet [Internet]. The History Channel website; 2013 [cited 2013 Jun 18] Available from: http://www.history.com/this-day-in-history/mikhail-gorbachev-becomes-head-of-supreme-soviet.
Mikhail Gorbachev becomes head of Supreme Soviet, http://www.history.com/this-day-in-history/mikhail-gorbachev-becomes-head-of-supreme-soviet (last visited Jun 18, 2013).
Mikhail Gorbachev becomes head of Supreme Soviet. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/mikhail-gorbachev-becomes-head-of-supreme-soviet. Accessed Jun 18, 2013.