Razali, A. B., L. Y. Xuan, and A. Abd. Samad. “Self-Directed Learning Readiness (SDLR) Among Foundation Students from High and Low Proficiency Levels to Learn English Language”. Malaysian Journal of Learning and Instruction, vol. 15, no. 2, Dec. 2018, pp. 55-81, doi:10.32890/mjli2018.15.2.3.