@book{KirchhoffKuhntLippetal.2010, author = {Sabine Kirchhoff and Sonja Kuhnt and Peter Lipp and Siegfried Schlawin}, title = {Der Fragebogen : Datenbasis, Konstruktion und Auswertung}, publisher = {VS Verlag}, address = {Wiesbaden}, isbn = {978-3-531-16788-6}, pages = {133}, year = {2010}, language = {de} }