共 13 条
[1]
Allen I.E., 2007, ONLINE NATION 5 YEAR
[4]
Blascovich J, 2002, COMP SUPP COMP W SER, P127
[5]
Childress M., 2006, DISTANCE EDUC, V27, P187, DOI [10.1080/01587910600789522, DOI 10.1080/01587910600789522]
[8]
Peterson M., 2006, Computer Assisted Language Learning, V19, P9, DOI 10.1080/09588220600804087
[9]
Schroeder R, 2002, COMP SUPP COMP W SER, P1
[10]
Sherwin J., 2007, APS Observer, V20