Grawe, R. (1979). Ability in pre-schoolers, earnings and home-environment. World Bank.
Chicago-viite (17. p.)Grawe, Roger. Ability in Pre-schoolers, Earnings and Home-environment. Washington: World Bank, 1979.
MLA-viite (9. p.)Grawe, Roger. Ability in Pre-schoolers, Earnings and Home-environment. World Bank, 1979.
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