Hillman, C. B. (1988). Teaching four year olds: A personal Journey. Phi Delta Kappa Educational Foundation.
Cita Chicago (17th ed.)Hillman, Carol B. Teaching Four Year Olds: A Personal Journey. USA: Phi Delta Kappa Educational Foundation, 1988.
Cita MLA (9th ed.)Hillman, Carol B. Teaching Four Year Olds: A Personal Journey. Phi Delta Kappa Educational Foundation, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.