Poonia , V. S. (2009). Research Methodology & statistical method (1.). Vishvabharati.
Chicago-čujuhus (17. p.)Poonia , Virender S. Research Methodology & Statistical Method. 1. New Dehli: Vishvabharati, 2009.
MLA-čujuhus (9. p.)Poonia , Virender S. Research Methodology & Statistical Method. 1. Vishvabharati, 2009.
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