Dyfyniad APA

Couper, M. P., Kennedy, C., Conrad, F. G., & Tourangeau, R. (2011). Designing Input Fields for Non-Narrative Open-Ended Responses in Web Surveys.

Dyfyniad Arddull Chicago

Couper, Mick P., Courtney Kennedy, Frederick G. Conrad, and Roger Tourangeau. Designing Input Fields for Non-Narrative Open-Ended Responses in Web Surveys. 2011.

Dyfyniad MLA

Couper, Mick P., Courtney Kennedy, Frederick G. Conrad, and Roger Tourangeau. Designing Input Fields for Non-Narrative Open-Ended Responses in Web Surveys. 2011.

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