Cita APA (7th ed.)

Kothari C.R. (2015). Research methodology: Methods and techniques. New age International.

Cita Chicago (17th ed.)

Kothari C.R. Research Methodology: Methods and Techniques. New Delhi: New age International, 2015.

Cita MLA (9th ed.)

Kothari C.R. Research Methodology: Methods and Techniques. New age International, 2015.