Dyfyniad APA

Mangoine, T. W. (1995). Mail surveys: Improving the quality V. 40. Sage Publications.

Dyfyniad Arddull Chicago

Mangoine, Thomas W. Mail Surveys: Improving the Quality V. 40. New Delhi: Sage Publications, 1995.

Dyfyniad MLA

Mangoine, Thomas W. Mail Surveys: Improving the Quality V. 40. Sage Publications, 1995.

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