Business Research Method
- Azhar Harun and Nawi Abdullah. (2004). Metodologi Penyelidikan Ekonomi dan Sains Sosial [1]. Thomson Learning. (TSDAS Digital Library : HB131 Azhh)
- Cooper, D. R., and Schindler, P. S.(2003). Business Research Methods [2]. (8th ed.). McGraw Hill. (TSDAS Digital Library : HD30.4 Coo)
- Uma Sekaran. (2003). Research Methods for Business. A Skill Building Approach [3]. (4th ed.). Wiley. (TSDAS Digital Library : HD30.4 Sek)