Piaget, J. (1951). The child's conception of the world. Little Adams Quality paperbacks.
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Dyfyniad Arddull Chicago
Piaget, Jean. The Child's Conception of the World. Maryland: Little Adams Quality paperbacks, 1951.
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Dyfyniad MLA
Piaget, Jean. The Child's Conception of the World. Little Adams Quality paperbacks, 1951.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.