Dyfyniad APA
Piaget, J. (1959). The language and thought of the child. (3rd rev. ed.). Routledge.
Dyfyniad Arddull Chicago
Piaget, Jean. The Language and Thought of the Child. 3rd rev. ed. New York: Routledge, 1959.
Dyfyniad MLA
Piaget, Jean. The Language and Thought of the Child. 3rd rev. ed. Routledge, 1959.
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