1. Bowles S, Gintis H (1976) Schooling in capitalist America. Basic Books, New York
2. Bowles S, Gintis H (1981) Education as a site of contradictions in the reproduction of the capital- labor relationship: Second thoughts on the "correspondence principle.". Economic and Industrial Democracy 2(2):223–242
3. Chisaka, B. C. & Vakalisa, N. G. (2003). Some effects of ability grouping in Harare secondary schools: A case study, South African Journal of Education, 23(3), 176-180.
http://www.ajol.info/index.php/saje/article/viewFile/24930/20617
(2011.08.17).
4. Entorf, H. & Lauk, M. (2006). Peer effects, social multipliers and migrants at school: An international comparison. IZA Discussion Paper, 2182. Bonn: Forschungsinstitut zur Zukunft der Arbeit.
http://ftp.iza.org/dp2182.pdf
(2011.08.17).
5. Freire P (1970) Pedagogy of the oppressed. Herder and Herder, New York