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Dyfyniad Arddull ChicagoPatton, Michael Quinn. How to Use Qualitative Methods in Evaluation. Newbury Park, Calif.: Sage Publications, 1987.
Dyfyniad MLAPatton, Michael Quinn. How to Use Qualitative Methods in Evaluation. Sage Publications, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.