TY - BOOK AU - Gay, L. R. AU - Mills, Geoffrey E. AU - Airasian, Peter W. TI - Educational research : competencies for analysis and applications ET - 10th ed PB - Pearson PY - 2012 EP - xvii, 648 p. UR - https://ci.nii.ac.jp/ncid/BB12805905 SN - 9780132613170 ER -