Dyfyniad APA

Barnett, V. (2002). Sample survey: Principles and methods/3rd ed. John Wiley &Sons.

Dyfyniad Arddull Chicago

Barnett, Vic. Sample Survey: Principles and Methods/3rd Ed. UK: John Wiley &Sons, 2002.

Dyfyniad MLA

Barnett, Vic. Sample Survey: Principles and Methods/3rd Ed. John Wiley &Sons, 2002.

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