[1. Douglas D. Assessing Languages for Specific Purposes. Cambridge University Press. Cambridge, 2000.10.1017/CBO9780511732911]Search in Google Scholar
[2. McNamara T. Measuring second language performance. Longman. London, 1996.]Search in Google Scholar
[3. Hughes A. Testing for Language Teachers. Cambridge University Press. Cambridge, 1997.]Search in Google Scholar
[4. Shaw SD, Weir C. Examining Writing: Research and Practice in Assessing Second Language Writing. Cambridge University Press. Cambridge, 2007.]Search in Google Scholar
[5. Weigle SC. Assessing Writing. Cambridge University Press. Cambridge, 2002.10.1017/CBO9780511732997]Search in Google Scholar