Thomas, C., & Shaw, C. P. (1992). Issues in the development of multigrade schools. World Bank.
Chicago-viite (17. p.)Thomas, Christopher, ja Christopher P. Shaw. Issues in the Development of Multigrade Schools. Washington, D.C: World Bank, 1992.
MLA-viite (9. p.)Thomas, Christopher, ja Christopher P. Shaw. Issues in the Development of Multigrade Schools. World Bank, 1992.
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