@book{156,
  keywords = {Social sciences Research Methodology, Sociology Research Methodology},
  author = {William Neuman},
  title = {Basics of social research : qualitative and quantitative approaches},
  year = {2007},
  edition = {2},
  publisher = {Pearson/Allyn and Bacon},
  address = {Boston},
  isbn = {0205484379},
}