Singh,Sanjeev Kumar. (2014). Research Methodology and Techniques in Economics. Centrum Press.
Παραπομπή Chicago StyleSingh,Sanjeev Kumar. Research Methodology and Techniques in Economics. New Delhi: Centrum Press, 2014.
Παραπομπή MLASingh,Sanjeev Kumar. Research Methodology and Techniques in Economics. Centrum Press, 2014.
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