Dyfyniad APA

Blasius, J., & Thiessen, V. (2012). Assessing the quality of survey data. Sage Publications.

Dyfyniad Arddull Chicago

Blasius, Jorg, and Victor Thiessen. Assessing the Quality of Survey Data. London: Sage Publications, 2012.

Dyfyniad MLA

Blasius, Jorg, and Victor Thiessen. Assessing the Quality of Survey Data. Sage Publications, 2012.

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