Bernard, H. R. (2013). Social research method: Qualitative and quantitative approaches (2nd ed.). SAGE Publications.
Cita Chicago (17th ed.)Bernard, H. Russell. Social Research Method: Qualitative and Quantitative Approaches. 2nd ed. Los Angeles: SAGE Publications, 2013.
Cita MLA (8th ed.)Bernard, H. Russell. Social Research Method: Qualitative and Quantitative Approaches. 2nd ed. SAGE Publications, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.