Hurd, M. (2006). The Value Factor. Viva books Pvt. Ltd.
Lua i Stíl Chicago (17ú heag.)Hurd, Mark. The Value Factor. New Delhi: Viva books Pvt. Ltd, 2006.
Lua MLA (9ú heag.)Hurd, Mark. The Value Factor. Viva books Pvt. Ltd, 2006.
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