Age of Exploration Infographic. (2013). The History Channel website. Retrieved 6:10, June 20, 2013, from http://www.history.com/shows/mankind-the-story-of-all-of-us/interactives/age-of-exploration.
Age of Exploration Infographic. [Internet]. 2013. The History Channel website. Available from: http://www.history.com/shows/mankind-the-story-of-all-of-us/interactives/age-of-exploration [Accessed 20 Jun 2013].
“Age of Exploration Infographic.” 2013. The History Channel website. Jun 20 2013, 6:10 http://www.history.com/shows/mankind-the-story-of-all-of-us/interactives/age-of-exploration.
“Age of Exploration Infographic,” The History Channel website, 2013, http://www.history.com/shows/mankind-the-story-of-all-of-us/interactives/age-of-exploration [accessed Jun 20, 2013].
“Age of Exploration Infographic,” The History Channel website, http://www.history.com/shows/mankind-the-story-of-all-of-us/interactives/age-of-exploration (accessed Jun 20, 2013).
Age of Exploration Infographic [Internet]. The History Channel website; 2013 [cited 2013 Jun 20] Available from: http://www.history.com/shows/mankind-the-story-of-all-of-us/interactives/age-of-exploration.
Age of Exploration Infographic, http://www.history.com/shows/mankind-the-story-of-all-of-us/interactives/age-of-exploration (last visited Jun 20, 2013).
Age of Exploration Infographic. The History Channel website. 2013. Available at: http://www.history.com/shows/mankind-the-story-of-all-of-us/interactives/age-of-exploration. Accessed Jun 20, 2013.