Greaney, V., & Kellaghan, T. (2008). Assessing national achievement levels in education. World Bank.
Chicago-čujuhus (17. p.)Greaney, Vincent, juo Thomas Kellaghan. Assessing National Achievement Levels in Education. Washington, DC: World Bank, 2008.
MLA-čujuhus (9. p.)Greaney, Vincent, juo Thomas Kellaghan. Assessing National Achievement Levels in Education. World Bank, 2008.
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