Exhibit 3
Joint Filing Agreement
Pursuant to Rule 13d-1(f)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with each other of a Schedule 13D, with respect to each holding as to which such a report must be made, and that each such Schedule and all amendments thereto are made on behalf of each of them.
This Agreement may be executed in any number of counterparts, each of which shall be deemed an original and all of which shall together constitute the same agreement.
Executed this 12th day of December, 2011.
BERTELSMANN AG
By:/s/ Martin Dannhoff
Martin Dannhoff
Senior Vice President
By:/s/ Michael Kronenburg
Michael Kronenburg
Senior Vice President
BERTELSMANN ASIA INVESTMENTS AG
By:/s/ Erich Kalt
Erich Kalt
Authorized Signatory
By:/s/ Rose-Marie Mülli
Rose-Marie Mülli
Authorized Signatory
