Dyfyniad APA

Fowler, F. J. (2002). Survey research methods. Thousand Oaks, Calif: Sage Publications.

Dyfyniad Arddull Chicago

Fowler, Floyd J. Survey Research Methods. Thousand Oaks, Calif: Sage Publications, 2002.

Dyfyniad MLA

Fowler, Floyd J. Survey Research Methods. Thousand Oaks, Calif: Sage Publications, 2002.

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