BibTeX-Format:
@incollection{Klein 2009, title = {{S}emi-modal variation}, editor = {Andreas Dufter and Jürg Fleischer and Guido Seiler}, publisher = {Mouton de Gruyter}, pBuchhandel_URL = {https://www.degruyter.com/view/books/9783110216097/9783110216097.3.297/9783110216097.3.297.xml}, year = {2009}, series = {Trends in Linguistics. Studies and Monographs