The Effect of Grade Contracts on Student Performance
William A. Poppen and Charles L. Thompson
- 期刊名称The Journal of Educational Research
- 作者William A. Poppen and Charles L. Thompson
- 卷第64卷
- 期第9期
- 印刷ISSN0022-0671
- 电子ISSN1940-0675
- 文件大小1176.64KB
- 发表时间1971-0506
- DOI10.2307/27536171
- 页码420-424