@book{63068,
	author = {Friebertshäuser, Barbara and Langer, Antje},
	title = {Handbuch qualitative Forschungsmethoden in der Erziehungswissenschaft},
	publisher = {Beltz Juventa},
	year = {2013},
	address = {Weinheim ; München ; Basel},
	edition = {4., durchgesehene Auflage}
}