Schreier, H. The movement of children's philosophy. София: 2004 138-140,.
Schreier, H. The movement of children's philosophy. София: 2004 138-140,.
Schreier, H. (2004) The movement of children's philosophy, София: 138-140,.
Schreier, H. (2004). The movement of children's philosophy. Promises, problems, approaches. Обучение и възпитание в началните училища, детските градини и специалните училищни заведения (с. 138-140). София: (1).
Schreier H. The movement of children's philosophy: Promises, problems, approaches. София: 2004. p. 138-140.
