5Widdowson.H.G.Teaching Language as Communication,1978.
6Rod Ellis.Understanding Second Language Acquisition. Journal of Women s Health . 1985
7Edwards,H.M,Wesche S,Krashen R,C1ement,B.Kruidenier.Second-language acquisition through subject-matter learning:A study of sheltered psychology classes at the University of Ottawa[].The Canadian Modern Language Review.1984
8Johnson,R.K,M.Swain.Immersion education: International perspectives[]..1997
9Kasper,L.F.Improved reading performance for ELS students Through reading academic courses paring[].Journal of Reading.1994
10Kelly,L.G.25 Centuries of Language Teaching[]..1961