VaRG. (2008). Valley research group private limited (VaRG) general profile.
Cita Chicago (17th ed.)VaRG. Valley Research Group Private Limited (VaRG) General Profile. 2008.
Cita MLA (8th ed.)VaRG. Valley Research Group Private Limited (VaRG) General Profile. 2008.
Atenció: Aquestes cites poden no estar 100% correctes.