KOHLER, R. (2014). Jean Piaget. Bloomsbury Academic.
Cita Chicago (17th ed.)KOHLER, Richard. Jean Piaget. Bloomsbury Academic, 2014.
Cita MLA (9th ed.)KOHLER, Richard. Jean Piaget. Bloomsbury Academic, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.