[文献资料]参考文献

1 ． Blum D E ﹒ Use of photocopied anthologies for courses snarled by delays and costs of copyright permission process ﹒ Chronicle of higher education，1991，Sept 11：A‐19 — A‐20.7 ． Povlacs J T ﹒ 101 things you can do for the first three weeks of class ﹒ Tea ......