King, G., Keohane, R. O., & Verba, S. (1994). Designing social inquiry: Scientific inference in qualitative research. Princeton University Press.
Dyfyniad Arddull ChicagoKing, Gary, Robert O. Keohane, and Sidney Verba. Designing Social Inquiry: Scientific Inference in Qualitative Research. Princeton, N.J.: Princeton University Press, 1994.
Dyfyniad MLAKing, Gary, et al. Designing Social Inquiry: Scientific Inference in Qualitative Research. Princeton University Press, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.