Punch, K. (2003). Survey research: The basics. Sage Publications.
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Dyfyniad Arddull Chicago
Punch, Keith. Survey Research: The Basics. London ; Thousand Oaks, CA: Sage Publications, 2003.
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Dyfyniad MLA
Punch, Keith. Survey Research: The Basics. Sage Publications, 2003.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.