BibTeX-Format:
@incollection{Klein 2009, author = {Klein, Katarina}, title = {{S}emi-modal variation}, pBuchhandel_URL = {https://www.degruyter.com/view/books/9783110216097/9783110216097.3.297/9783110216097.3.297.xml}, series = {Trends in Linguistics. Studies and Monographs