@unpublished{AG,
	author = {{Arbeitsgemeinschaft Sprachliche Grundbildung - Linguistik der Universitaet}},
	title = {Foerderdiagnostik. Rechtschreibung},
	date = {Unveröffentlicht},
	OPTsubtitle = {subtitle},
	OPTtitleaddon = {titleaddon},
	OPTlanguage = {language},
	howpublished = {Unveroeffentlicht},
	OPTnote = {note},
	OPTlocation = {location},
	OPTisbn = {isbn},
	OPTdate = {date},
	OPTmonth = {month},
	OPTyear = {year},
	OPTaddendum = {addendum},
	OPTpubstate = {pubstate},
	OPTurl = {url},
	OPTurldate = {urldate},
}