Sources In A.P.A. Format
Brain Power: A Timeline of Stephen Hawking's Life. (n.d.) Retrieved from http://geekologie.com/2013/03/brain-power-a-timeline-of-stephen-hawkin.php
Stephen Hawking. (n.d.). Retrieved from http://www.hawking.org.uk/
1800wheelchair.com Inc. (2014). An Overview of Stephen Hawking. Retrieved from http://www.1800wheelchair.com/news/post/overview-of-stephen-hawking.aspx
Stephen Hawking. (n.d.). Retrieved from http://www.hawking.org.uk/
1800wheelchair.com Inc. (2014). An Overview of Stephen Hawking. Retrieved from http://www.1800wheelchair.com/news/post/overview-of-stephen-hawking.aspx