1. Bray M, Liu J, Zhang W, Kobakhidze MN (2019) (Mis)Trust and (Abuse of) Authority in Cambodian Education: Parallel Lessons in the Shadow. In: Schüpbach M, Lilla N (eds) Extended Education from an International Comparative Point of View. Springer VS, Wiesbaden. https://doi.org/10.1007/978-3-658-27172-5_2
2. Bray M (2016) Parallel private lessons: Scale, nature and implications for policy and school management. This Life Cambodia and Comparative Education Research Centre, the University of Hong Kong, retrieved from http://www.thislifecambodia.org/wp-content/uploads/2017/01/20160714_Final_Parallel_Private_Lessons.pdf
3. Bray M, Lykins C (2012) Shadow education: Private supplementary tutoring and its implications for policy makers in Asia. Asian Development Bank, retrieved from https://www.adb.org/publications/shadow-education-private-supplementary-tutoring-and-its-implications-policy-makers-asia
4. Bray M (1990) The Private Costs of Public Schooling: Household and Community Financing of Primary Education in Cambodia. IIEP/UNESCO, retrieved from https://unesdoc.unesco.org/ark:/48223/pf0000117632
5. Brehm WC (2016) The Structures and Agents Enabling Educational Corruption in Cambodia. In: Kitamura Y, Edwards DB, Sitha C, Williams JH (eds) The Political Economy of Schooling in Cambodia. International and Development Education. Palgrave Macmillan, New York. https://doi.org/10.1057/9781137456007_6