BibTeX-Format:
@book{ editor = {Ammon, Ulrich / Schmidt, Gabriele (unter Mitarbeit von Birte Kellermeier-Rehbein)}, title = {{F}��rderung der deutschen {S}prache weltweit}, address = {Berlin/Boston}, year = {2019}, publisher = {de Gruyter}, pCounter = {920}, subtitle = {{V}orschl��ge, {A}ns��tze und {K}onzepte}, typ = {book}}