APA (7th ed.) Zitazioa
Flavell, J. H. (1985). Cognitive development (2nd.ed.). Prentice - Hall.
Chicago Style (17th ed.) Zitazioa
Flavell, John H. Cognitive Development. 2nd.ed. New Jersey: Prentice - Hall, 1985.
MLA (9th ed.) Zitazioa
Flavell, John H. Cognitive Development. 2nd.ed. Prentice - Hall, 1985.
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