Cita APA (7th ed.)

Kumar, R. (2011). Research methodology: A step-by-step guide for beginners (3rd ed.). Sage.

Cita Chicago (17th ed.)

Kumar, Ranjit. Research Methodology: A Step-by-step Guide for Beginners. 3rd ed. London: Sage, 2011.

Cita MLA (9th ed.)

Kumar, Ranjit. Research Methodology: A Step-by-step Guide for Beginners. 3rd ed. Sage, 2011.