1. 1
    by DeVellis, Robert F.
    Published 2003
    ...Applied social research methods series ;...
    Book
  2. 2
    by DeVellis, Robert F.
    Published 2012
    ...Applied social research methods series ;...
    Book
  3. 3
    ...Applied social research methods series ;...
    Book
  4. 4
    by DeVellis, Robert F.
    Published 2022
    ...Applied social research methods series ;...
    Book