4McCarthy, M. 1990. Vocabulary [M]. Oxford: Oxford University Press.
5Scott, M. R. 1996. WordSmith Tools [CP]. Oxford: Oxford University Press.
6Scott, M. R. 1997a. PC Analysis of Key Words - and Key Key Words [J]. System Vol. 25, (2): 233 -245.
7Scott, M. R. 1997b. The Right Word in the Right Place: Key Word Associates in Two Languages [C]. AAA - Arbeiten aus Anglistik und Amerikanistik, Band 22 (1997). Heft 2 Gunter Narr Vertag Tübingen.
8Scott, M. R. 2003. Word Smith Tools Manual[M]. Oxford: Oxford University Press.
9Benson P. Teaching and Researching Autonomy in Language Learning [M]. London: Longman, 2001.
10Hornby A S. A Guide to Patterns and Usage in English [M]. London: Oxford University Press, 1954.
