1. Bachman, L.F.: 1990, Fundamental Considerations in Language Testing, Oxford University Press, Oxford.
2. Bachman, L.F., Davidson, F. & Milanovic, M.: 1996, ‘The use of test method characteristics in the content analysis and design of EFL proficiency tests’, Language Testing 13,125–150.
3. Bachman, L.F., Davidson, F., Ryan, K. & Choi, I-C.: 1991, An Investigation into the Comparability of Two Tests of English as a Foreign Language: The Cambridge-TOEFL Comparability Study, Cambridge University Press, Cambridge.
4. Bachman, L.E, Lynch, B.K. & Mason, M: 1995, ‘Investigating variability in tasks and rater judgements in a performance test of foreign language speaking’, Language Testing 12, 238–257.
5. Bentler, P.M.: 1992, EQS Structural Equations Program Manual, BMDP Statistical Software, Inc., Los Angeles, CA.