Citazione APA

Gupta, M., & Gupta,Deepa. (2011). Research methodology. PHI learning.

Stile di citazione Chicago

Gupta, Mukul, e Gupta,Deepa. Research Methodology. New Delhi: PHI learning, 2011.

Citazione MLA

Gupta, Mukul, e Gupta,Deepa. Research Methodology. PHI learning, 2011.