Zenith Optimedia: Display to grow in 2011, TV still ad king

http://econsultancy.com/us/blog/6940-zenith-optimedia-display-is-growing-but-tv-is-still-king-of-all-advertising

參考來源：

"Zenith Optimedia: Display to grow in 2011, TV still ad king"
- Zenith Optimedia: Display to grow in 2011, TV still ad king | Econsultancy (在「Google 網頁註解」中檢視)