Não informado. (1967). Journal of research and development in education. University of Georgia, College of Education.
Čikaški stil citiranja (17. izdanje)Não informado. Journal of Research and Development in Education. Athens, Ga: University of Georgia, College of Education, 1967.
MLA način citiranja (8. izdanje)Não informado. Journal of Research and Development in Education. University of Georgia, College of Education, 1967.
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