3WATSON,WILLIAM R. An argument for clarity:what are learn-ing management systems,what are they not,and what should they become[J].{H}TECHTRENDS,2013,(02):28-34.
4Badrul H. Khan. Web-Based Instruction[M]. Educational Technology Publications Englewood Cliffs, New Jersey. 1997.
5Gillani, Relan. Incorporating Interactivity and Multimedia into Web--Based Instruction[J]. In Khan, B. (Ed.). Web-Based Instruction (pp. 239--244). New Jersey: Educational Technology Publications, Inc. 1997.
6Clark. Glossary of CBT/WBT Terms[DB/OL]. http://citeseer, ni. nec. com/context/964439/0P.