Dyfyniad APA
ebrary, Inc, Winker, P., Menold, N., & Porst, R. (2013). Interviewers' deviations in surveys: Impact, reasons, detection and prevention. Peter Lang.
Dyfyniad Arddull Chicago
ebrary, Inc, Peter Winker, Natalja Menold, and Rolf Porst. Interviewers' Deviations in Surveys: Impact, Reasons, Detection and Prevention. Frankfurt am Main: Peter Lang, 2013.
Dyfyniad MLA
ebrary, Inc, et al. Interviewers' Deviations in Surveys: Impact, Reasons, Detection and Prevention. Peter Lang, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.