7Amhag,L.& Jackobsson,A.2009.Collaborative learning as collective competence when students use the potential of meaning in asynchronous dialogues[J].Computer & Education 52:656-667.
8Emerson,C.2000.Bakhtin,Lotman,Vygotsky,and Lydia Ginzburg on types of selves:A tribute[C]∥ L.Engelstein & S.Sandler.Self and Story in Russia History.Ithaca,NY:Cornell Univeristy Press:20-45.
9Fernyhough.C.1996.The Dialogic Mind:A Dialogic Approach to the Higher Mental Functions[J].New Ideas in Psychol 14(1):47-62.
10Lantolf,J.P.2006.Sociocultural theory and L2:State of the art[J].Studies in Second Language Acquisition (1):67-109.
