APA (7th ed.) Zitazioa
Gerald Young. Development and Causality: Neo-Piagetian Perspectives. Springer.
Chicago Style (17th ed.) Zitazioa
Gerald Young. Development and Causality: Neo-Piagetian Perspectives. Nueva York, EUA: Springer.
MLA (9th ed.) Zitazioa
Gerald Young. Development and Causality: Neo-Piagetian Perspectives. Springer.
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