Language assessment in practice :developing language assessments and justifying their use in the real world
Bachman, Lyle F.
SPSS survival manual :a step by step guide to data analysis using SPSS for Windows (version 12)
Pallant, Julie.
Techniques in testing
Madsen, Harold S. (Harold Stanley)
Pragmatics
Levinson, Stephen C.
Assessing listening
Buck, Gary.