[1]J effrey Schwartz.Writing Exchanges on an Electric Network
http://www.ncte.org/teach/schwartz9015.htm1(2001.5.24).






[2]Trent Baston.The Network-Based Writing Classroom
http://129.118.38.138/Kairos/1.2/coverweb/cmcmday.htm(2001.5.24).