Cita APA

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

Chicago Edition Citation

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

Cita MLA

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