@book{
title = {Handbuch pädagogische Ansätze },
author = {Knauf, Tassilo},
editor = {Düx, Gislinde},
editor = {Schlüter, Daniela},
year = {2007},
edition = {1. Aufl.},
address = {Berlin [u.a.] },
publisher = {Cornelsen Scriptor},
}