Cite
Game Center: Leaderboards and Achievements
MLA
Philip Chu. Game Center: Leaderboards and Achievements. Jan. 2013. EBSCOhost, widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsair&AN=edsair.doi...........a03a1860ce1e7f52bb0622d3cb740472&authtype=sso&custid=ns315887.
APA
Philip Chu. (2013). Game Center: Leaderboards and Achievements.
Chicago
Philip Chu. 2013. “Game Center: Leaderboards and Achievements,” January. http://widgets.ebscohost.com/prod/customlink/proxify/proxify.php?count=1&encode=0&proxy=&find_1=&replace_1=&target=https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsair&AN=edsair.doi...........a03a1860ce1e7f52bb0622d3cb740472&authtype=sso&custid=ns315887.