BibTeX-Format:
@incollection{ typ = {incollection}, editor = {R��hner, Charlotte, S��nker, Heinz}, publisher = {Budrich}, pages = {199-214}, year = {2014}, booktitle = {{H}andbuch {F}r��he {K}indheit}, title = {{M}ehrsprachigkeit von {G}eburt an: {V}orteile, {S}chwierigkeiten und {W}ege dahin}, author = {M��ller, Natascha, Schmitz, Katrin}}