共 35 条
- [2] AYLLON T, 1968, TOKEN ECONOMY MOTIVA
- [4] BAUER D, 1972, WASHINGTON DAIL 0427, P5
- [6] BIKLEN D, 1973, THESIS SYRACUSE U
- [7] BROWN GD, 1968, J CHILD PSYCHOL PSYC, V9, P203
- [9] BURCHARD J, 1965, BEHAV RES THER, V2, P245
- [10] COHEN H, 1971, NEW LEARNING ENVIRON