Dyfyniad APA

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

Dyfyniad Arddull Chicago

Czaja, Ronald. Designing Surveys: A Guide to Decisions and Procedures. London: Pine Forge, 1996.

Dyfyniad MLA

Czaja, Ronald. Designing Surveys: A Guide to Decisions and Procedures. Pine Forge, 1996.

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