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Dyfyniad Arddull ChicagoLaws, Sophie. Research for Development: A Practical Guide. New Delhi: Vistaar Publications, 2003.
Dyfyniad MLALaws, Sophie. Research for Development: A Practical Guide. Vistaar Publications, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.