共 34 条
[2]
[Anonymous], 1990, COOPERATIVE LEARNING
[3]
[Anonymous], 1962, PSYCHOL BEING
[4]
Atkinson J.W., 1964, INTRO MOTIVATION, DOI DOI 10.1007/s00431-012-1719-3
[6]
Brown BB., 1990, THRESHOLD DEV ADOLES, P171, DOI DOI 10.1037/0022-3514.52.1.47
[7]
Coleman J., 1961, ADOLESCENT SOC
[8]
CONNELL JP, 1990, MINNESOTA S CHILD PS, V23, P43
[10]
FARRELL E, 1990, HANGING DROPPING OUT