Não informado. (1968). Journal of Educational Administration and History. University of Leeds, Museum of Education.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Journal of Educational Administration and History. Leeds, Inglaterra: University of Leeds, Museum of Education, 1968.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Journal of Educational Administration and History. University of Leeds, Museum of Education, 1968.
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