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Figure 1. Young People. [Photography]. Retrieved from Encyclopædia Britannica ImageQuest.
http://quest.eb.com/search/158_2436325/1/158_2436325/cite Accessed 15 September 2016.
Figure 2. Family. [Photography]. Retrieved from Encyclopædia Britannica ImageQuest.
http://quest.eb.com/search/158_2467747/1/158_2467747/cite Accessed 15 September 2016.
Figure 3. Work. [Photography]. Retrieved from Encyclopædia Britannica ImageQuest.
http://quest.eb.com/search/158_2465678/1/158_2465678/cite Accessed 15 September 2016.