Awdur
- Bradburn, Norman M. 1 canlyniadau
- Harper, Pat Callbeck 1 canlyniadau
- Holley, Jack K. 1 canlyniadau
- Lake, Celinda C. 1 canlyniadau
- Lavrakas, Paul J. 1 canlyniadau
- Montana Alliance for Progressive Policy 1 canlyniadau
- Moore, David W. 1 canlyniadau
- Sudman, Seymour 1 canlyniadau
- Wheeler, Michael, 1943- 1 canlyniadau