Facebook And Zynga Enter Into Five Year Partnership, Expand Use Of Facebook Credits

http://techcrunch.com/2010/05/18/facebook-and-zynga-enter-into-five-year-partnership-expand-use-of-facebook-credits/

參考來源： http://techcrunch.com/2010/05/18/facebook-and-zynga-enter-into-five-year-partnership-expand-use-of-facebook-credits/ (在「Google 網頁註解」中檢視)