@book{
title = {Öffne mir das Tor zur Welt! },
author = {Waite, Helen E.},
editor = {Gabert, Sabine},
year = {2010},
edition = {Überarb. Neuausg., 6. Aufl.},
address = {Stuttgart },
publisher = {Verl. Freies Geistesleben},
}