Cita APA (7a ed.)

Bernard, H. R. (2000). Social research methods: Qualitative and quantitative approaches. Sage.

Cita Chicago Style (17a ed.)

Bernard, H. Russell. Social Research Methods: Qualitative and Quantitative Approaches. Thousand Oaks, California [etc.]: Sage, 2000.

Cita MLA (9a ed.)

Bernard, H. Russell. Social Research Methods: Qualitative and Quantitative Approaches. Sage, 2000.