BibTeX-Format:
@incollection{ typ = {incollection}, series = {Studies on Language Acquisition 10}, author = {Müller, Natascha}, booktitle = {{T}wo {F}irst {L}anguages. {E}arly {G}rammatical {D}evelopment in {B}ilingual {C}hildren}, pages = {193-234}, publisher = {Foris}, year = {1990}, address = {Dordrecht}, title = {{D}eveloping two gender assignment systems simultaneously}, editor = {Jürgen M. Meisel}}