1.
2.
Pre-Election Polling Sources of Accuracy and Error
by Crespi, Irving
ISBN: 9780871542083
List Price: $24.95
3.
The Public Opinion Process: How the People Speak (Routledge Communication Series)
by Irving Crespi
ISBN: 9780805826647
List Price: $60.00
4.
Public Opinion Process How the People Speaks
by Crespi, Irving
ISBN: 9780805826654
List Price: $24.50