Não informado. (2002). California parent teacher. National Congress of Parents and Teachers.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. California Parent Teacher. Los Angeles, Calif: National Congress of Parents and Teachers, 2002.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. California Parent Teacher. National Congress of Parents and Teachers, 2002.
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