↑ Garritzmann, Julian L., 2016. The Political Economy of Higher Education Finance. The Politics of Tuition Fees and Subsidies in OECD countries, 1945-2015. Basingstoke: Palgrave Macmillan.
↑ Marcucci, Pamela N. and D. Bruce Johnstone, "Tuition Fee Policies in a Comparative Perspective: Theoretical and Political Rationales", Journal of Higher Education Policy and Management, Volume 29, Number 1 (2007), pp. 25-40. (Taylor & Francis Online, retrieved ngày 13 tháng 3 năm 2012)
