Neuman, W. L. (1991). Social research methods: Qualitative and quantitative approaches. Allyn and Bacon.
Citazione stile Chigago Style (17a edizione)Neuman, William Lawrence. Social Research Methods: Qualitative and Quantitative Approaches. Boston: Allyn and Bacon, 1991.
Citatione MLA (8a ed.)Neuman, William Lawrence. Social Research Methods: Qualitative and Quantitative Approaches. Allyn and Bacon, 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.