Pole, C. J., & Lampard, R. (2002). Practical social investigation: Qualitative and quantitative methods in social research. Edinburgh: Pearson Education Limited.
Παραπομπή Chicago StylePole, Christofer J., and Richard Lampard. Practical Social Investigation: Qualitative and Quantitative Methods in Social Research. Edinburgh: Pearson Education Limited, 2002.
Παραπομπή MLAPole, Christofer J., and Richard Lampard. Practical Social Investigation: Qualitative and Quantitative Methods in Social Research. Edinburgh: Pearson Education Limited, 2002.
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