TY - BOOK AU - Creswell,John W. AU - Creswell,J.David TI - Research design: qualitative, quantitative, and mixed methods approaches SN - 9781071817940 U1 - 300.721 23 PY - 2023/// CY - Los Angeles PB - SAGE KW - Social sciences KW - Research KW - Methodology KW - Statistical methods N1 - Previous edition: 2018; Includes bibliographical references and index ER -