Neuman, L. W. (2015). Social Research Methods: Qualitative and Quantitative Approaches (7th Edn.). Pearson India Education Services Pvt Ltd.
Παραπομπή σε μορφή Chicago (17η εκδ.)Neuman, Lawrence W. Social Research Methods: Qualitative and Quantitative Approaches. 7th Edn. 7th Floor, Knowledge Boulevard, A-8(A), Sector-62, Noida-201309, U.P, India: Pearson India Education Services Pvt Ltd, 2015.
Παραπομπή σε μορφή MLA (9th εκδ.)Neuman, Lawrence W. Social Research Methods: Qualitative and Quantitative Approaches. 7th Edn. Pearson India Education Services Pvt Ltd, 2015.
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