8Laufer, B & Paribakht, T S The relationship between passive and active vocabularies: effects of language learning context[J]. Language Learning, 1998, 48: 365-391.
9Lazaraton, A. Qualitative research in applied linguistics: A progress report[J]. TESOL Quarterly, 1995, 29: 455-472.
10Lazaraton, A. Current trends in research methodology and statistics in applied linguistics[J]. TESOL Quarterly, 2000, 34: 175-81.