Das bunte Lexikon der Kinderfragen - Azam, Jacques; Barborini, Robert; Boisteau, Manu; Bourgeau, Vincent; Chardonnay, Catherine; Choux, Nathalie; Dieterlé, Nathalie; Desplanche, Vincent; Dutertre, Charles; Latyk, Olivier; Massini, Anaïs; Perrin, Clotilde; et al.