TY - BOOK AU - Johnson,Burke AU - Christensen,Larry B. TI - Educational research: quantitative, qualitative, and mixed approaches SN - 9781412978286 (cloth) AV - LB 1028 .J63 2012 U1 - 370.7/2 22 PY - 2012/// CY - Thousand Oaks, Calif. PB - SAGE Publications KW - Education KW - Research N1 - Includes bibliographical references (p. 589-608) and index ER -