5Cumming A.Writing expertise and second-language proficiency,1989(06).
6Sasaki M & Hirose K.Explanatory variables for EFL students expository writingLanguage Learning Journal,1996.
7Kresovich B M.The journal assignment in composition class at a Japanese universityBulletin of the College Education University of the Ryukyus,1988.
8Peyton J K,J Staton,G Richardson & W Wolfram.The Influence of Writing Task on ESL Students Written ProductionResearch in the Teaching of English,1990.
9Jacobs H L et al.Testing ESL composition : A practical approach,1981.
10Raimes A.Language proficiency, writing ability and composing strategies: A study of ESL college student writersLanguage Learning Journal,1987.