Dyfyniad APA

Frazer, L., & Lawley, M. (2000). Questionnaire design and administration: A practical guide. John Wiley.

Dyfyniad Arddull Chicago

Frazer, Lorelle, and Meredith Lawley. Questionnaire Design and Administration: A Practical Guide. Brisbane: John Wiley, 2000.

Dyfyniad MLA

Frazer, Lorelle, and Meredith Lawley. Questionnaire Design and Administration: A Practical Guide. John Wiley, 2000.

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