Kumar, R. (2014). Research Methodology A Step -by- Step Guide for Beginners (4th.). Sage.
Cita Chicago Style (17a ed.)Kumar, Ranjit. Research Methodology A Step -by- Step Guide for Beginners. 4th. Sage, 2014.
Cita MLA (9a ed.)Kumar, Ranjit. Research Methodology A Step -by- Step Guide for Beginners. 4th. Sage, 2014.
Precaución: Estas citas no son 100% exactas.