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Dyfyniad Arddull ChicagoWilliamson, V., et al. The Parent Trauma Response Questionnaire (PTRQ): Development and Preliminary Validation. Taylor and Francis, 2018.
Dyfyniad MLAWilliamson, V., et al. The Parent Trauma Response Questionnaire (PTRQ): Development and Preliminary Validation. Taylor and Francis, 2018.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.