Belson, W. A., & Cleland, J. G. (1986). Validity in survey research: With special reference to the techniques of intensive interviewing and progressive modification for testing and constructing difficult or sensitive measures for use in survey research; a report. Gower.
Chicago-Zitierstil (17. Ausg.)Belson, William A., und J. G. Cleland. Validity in Survey Research: With Special Reference to the Techniques of Intensive Interviewing and Progressive Modification for Testing and Constructing Difficult or Sensitive Measures for Use in Survey Research; a Report. Aldershot [u.a.]: Gower, 1986.
MLA-Zitierstil (8. Ausg.)Belson, William A., und J. G. Cleland. Validity in Survey Research: With Special Reference to the Techniques of Intensive Interviewing and Progressive Modification for Testing and Constructing Difficult or Sensitive Measures for Use in Survey Research; a Report. Gower, 1986.