1. Academy of Singapore Teachers (AST). (2012a). Ethos of the teaching profession. AST website. Retrieved from https://www.academyofsingaporeteachers.moe.gov.sg/professional-excellence/ethos-of-the-teaching-profession.
2. Academy of Singapore Teachers (AST). (2012b). Teacher growth model. AST website. Retrieved from https://www.academyofsingaporeteachers.moe.gov.sg/professional-growth/learning-frameworks/teacher-growth-model.
3. Barber, M., & Mourshed, M. (2009). Shaping the future: How good education systems can become great in the decade ahead. New York, NY: McKinsey Education, McKinsey & Company. Retrieved from http://www.eurekanet.ru/res_ru/0_hfile_1906_1.pdf.
4. Cheok, J. (2013). S’pore teachers highest paid in the world. The Business Times. Retrieved from http://www.stjobs.sg/career-resources/hr-updates/spore-teachers-highest-paid-in-world/a/138447.
5. Darling Hammond, L. (2006). Powerful teacher education: Lessons from exemplary programmes. Jossey-Bass.