Hurd, M. (2006). The Value Factor. Viva books Pvt. Ltd.
Cita Chicago (17th ed.)Hurd, Mark. The Value Factor. New Delhi: Viva books Pvt. Ltd, 2006.
Cita MLA (9th ed.)Hurd, Mark. The Value Factor. Viva books Pvt. Ltd, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.