Dyfyniad APA

Czaja, R., & Blair, J. (1996). Designing surveys: A guide to decisions and procedures. Pine Forge Press.

Dyfyniad Arddull Chicago

Czaja, Ron, and Johnny Blair. Designing Surveys: A Guide to Decisions and Procedures. Thousand Oaks, Calif: Pine Forge Press, 1996.

Dyfyniad MLA

Czaja, Ron, and Johnny Blair. Designing Surveys: A Guide to Decisions and Procedures. Pine Forge Press, 1996.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.