Citazione APA

Kothari, C. (2004). Research methodology: Methods & techniques (2nd rev. ed.). New age international.

Stile di citazione Chicago

Kothari, C.R. Research Methodology: Methods & Techniques. 2nd rev. ed. New Delhi: New age international, 2004.

Citazione MLA

Kothari, C.R. Research Methodology: Methods & Techniques. 2nd rev. ed. New age international, 2004.