Piaget, J. (1999). Play, dreams and imitation in childhood. Routledge.
Lua i Stíl Chicago (17ú heag.)Piaget, Jean. Play, Dreams and Imitation in Childhood. London: Routledge, 1999.
Lua MLA (9ú heag.)Piaget, Jean. Play, Dreams and Imitation in Childhood. Routledge, 1999.
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