Hillman, C. B. (1988). Teaching four year olds: A personal Journey. Phi Delta Kappa Educational Foundation.
Chicago-viite (17. p.)Hillman, Carol B. Teaching Four Year Olds: A Personal Journey. USA: Phi Delta Kappa Educational Foundation, 1988.
MLA-viite (9. p.)Hillman, Carol B. Teaching Four Year Olds: A Personal Journey. Phi Delta Kappa Educational Foundation, 1988.
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