Babbie, E. R. (2002). The basics of social research (2nd ed.). Belmont, CA: Wadsworth Thomson Learning.
Chicago Style CitationBabbie, Earl R. The Basics of Social Research. 2nd ed. Belmont, CA: Wadsworth Thomson Learning, 2002.
Cita MLABabbie, Earl R. The Basics of Social Research. 2nd ed. Belmont, CA: Wadsworth Thomson Learning, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.