Birley, D., & Dufton, A. (1971). An equal chance: Equalities and inequalities of educational opportunity. Routledge & K. Paul.
Chicago-viite (17. p.)Birley, Derek, ja Anne Dufton. An Equal Chance: Equalities and Inequalities of Educational Opportunity. London: Routledge & K. Paul, 1971.
MLA-viite (8. p.)Birley, Derek, ja Anne Dufton. An Equal Chance: Equalities and Inequalities of Educational Opportunity. Routledge & K. Paul, 1971.
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