GM announces its electric car. (2013). The History Channel website. Retrieved 6:11, May 22, 2013, from http://www.history.com/this-day-in-history/gm-announces-its-electric-car.
GM announces its electric car. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/this-day-in-history/gm-announces-its-electric-car [Accessed 22 May 2013].
“GM announces its electric car.” 2013. The History Channel website. May 22 2013, 6:11 http://www.history.com/this-day-in-history/gm-announces-its-electric-car.
“GM announces its electric car,” The History Channel website, 2013, http://www.history.com/this-day-in-history/gm-announces-its-electric-car [accessed May 22, 2013].
“GM announces its electric car,” The History Channel website, http://www.history.com/this-day-in-history/gm-announces-its-electric-car (accessed May 22, 2013).
GM announces its electric car [Internet]. The History Channel website; 2013 [cited 2013 May 22] Available from: http://www.history.com/this-day-in-history/gm-announces-its-electric-car.
GM announces its electric car, http://www.history.com/this-day-in-history/gm-announces-its-electric-car (last visited May 22, 2013).
GM announces its electric car. The History Channel website. 2013. Available at: http://www.history.com/this-day-in-history/gm-announces-its-electric-car. Accessed May 22, 2013.