Authors (8941)
Tortora, R. D.
Name:Tortora, R. D.
Send email to: Tortora, R. D.
More information:
Robert D. Tortora
Gallup Organization
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Web survey bibliography
- Best Practice Instrument & Communications Evaluation...; 2016; Higgins, W. B.; Welch, R.; Tortora, R. D.; Vladutiu...
- Attrition in Consumer Panels; 2009; Tortora, R. D.
- Response rate and measurement differences in mixed...; 2009; Dillman, D. A., Phelps, G., Tortora, R. D., Swift,...
- Recruitment and retention for a consumer panel; 2008; Tortora, R. D.