1Rivers, W. "What Practitioners Say about Listening: Research Implications for the Classroom" [J]. In R. A. Gilman And L. M. Moody. Foreign Language Annals, 1984.
2Krashen, S. & Terrell, T. D. The Natural Approach [M]. Pergamon Press, 1983.
3Scrivener, J. Learning Teaching: A Guidebook for English Language Teacher [M].Macmillan Heinemann,1994.