@book{Piaget, author = {Piaget, Jean}, title = {Das moralische Urteil beim Kinde, Suhrkamp 1973.}, language = {de} } @book{Piaget, author = {Piaget, Jean}, title = {The moral judgement in the child, New York (Harcourt, Brace \& Company) 1932.}, language = {en} } @book{Piaget, author = {Piaget, Jean}, title = {The moral judgement in the child, III, Glencoe(Zhe free Press) 1948.}, language = {en} } @book{Piaget, author = {Piaget, Jean}, title = {Language and Thought of the Child. London (Routledge) 1959.}, language = {en} } @book{Piaget, author = {Piaget, Jean}, title = {La naissance de l'intelligence chez l'enfant. Neuch{\^a}tel (Delachaux et Niestl) 1966.}, language = {fr} } @book{InhelderPiaget, author = {Inhelder, B. and Piaget, Jean}, title = {The growth of logical thinking, New York (Basic Books) 1958.}, language = {en} }