Allen, W. Y., & Campbell, D. (1948). The creative nursery center: A unified service to children and parents. New York: Family Service Association of America.
Παραπομπή Chicago StyleAllen, Winifred Y., and Doris Campbell. The Creative Nursery Center: A Unified Service to Children and Parents. New York: Family Service Association of America, 1948.
Παραπομπή MLAAllen, Winifred Y., and Doris Campbell. The Creative Nursery Center: A Unified Service to Children and Parents. New York: Family Service Association of America, 1948.
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