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Jean Jeanne Abdullah Jeanne d'Arc Jean Piaget Jean Retno Aryani Jean-Éric Vergne Jean Henry Dunant Jean Calvin Jean-Jacques Rousseau Jean-Paul MaratRujukan
WikiPedia: Jean Piaget http://cantic.bnc.cat/registres/CUCId/a10459820 http://www.fondationjeanpiaget.ch/ http://www.jeanpiaget.ch/index-en.html http://www.unige.ch/piaget/Presentations/presentg.... http://www.butler-bowdon.com/piaget-language-and-t... http://www.ondwelle.com/FrSM02.pdf http://www.ondwelle.com/OSM01.pdf http://www.ondwelle.com/OSM02.pdf http://campber.people.clemson.edu/piaget.html http://cohort09devpsyc.commons.gc.cuny.edu/files/2...