author = { Gaarder, Jostein AND Düzakin, Akin AND Haefs, Gabriele AND Haefs, Gabriele },

title = { Fragen fragen },

publisher = {Hanser},

isbn = {9783446240865},

isbn = {3446240861},

keywords = { Philosophie , Kinderfrage , Kinderbuch },

year = {2012},

address = { München },

url = { http://slubdd.de/katalog?TN_libero_mab2 }