Social research methods：Qualitative and quantitative approaches /: Social research methods：qualitative and quantitative approaches：定性研究与定量研究 Social Research Methods:Qualitative and Quantitative Approaches 并列题名：Social Research Methods:Qualitative and Quantitative Approaches Social work research methods qualitative and quantitative applications Social Research Methods:Quantitative and Qualitative Approaches and Applications an introduction to qualitative and quantitative approaches 并列题名：Social Research Methods:Quantitative and Qualitative Approaches and Applications combining qualitative and quantitative approaches Qualitative and quantitative approaches /: