共 80 条
[63]
Oblinger D.G., 2005, Educause Review, V40, P12
[64]
Ortiz-Rodriguez M., 2005, Q REV DISTANCE ED, V6, P97
[65]
Park J., 2007, Proceedings of the 2007 Academy of Human Resource Development Annual Conference, P251
[66]
Park JH, 2009, EDUC TECHNOL SOC, V12, P207
[68]
Phipps R., 1999, WHATS DIFFERENCE REV
[70]
Rovai A.P., 2002, J ASYNCHRONOUS LEARN, V6, P41