Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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