Arab, R. (2012). Syntagmatic and Paradigmatic Relations in TEFL: How to avoid perfunctory teaching. Retrieved May 7, 2014, from https://philldoost.wordpress.com/2012/01/28/190/

Bache, C., & Davidsen-Nielsen, N. (1997), Mastering English: An Advanced Grammar for Non-native and Native Speaker. New York: Mouton de Gruyter.

Barry, AK. (1998). English Grammar: Language as Human Behavior. New York: Pearson. (TSDAS Digital Library : Printed Book : PE1112 Bar)

Celce-Murcia, M., & Larsen-Freeman, D. (1999). The grammar book: An ESL/EFL teacher’s course (2nd ed.). Boston: Heinle & Heinle. (TSDAS Digital Library : Printed Book : PE1128 A2Cel)

Klammer T. P., Klammer T. P., Schulz M. R. and Della Volpe A. (2000). Analyzing English Grammar (6th ed.). India: Pearson Education. (TSDAS Digital Library : Printed Book : PE1106 Kla [5th ed.])