BibTeX-Format:
@book{ year = {2015}, title = {{C}ode-{S}witching: {F}ranz��sisch, {I}talienisch, {S}panisch. {E}ine {E}inf��hrung}, address = {T��bingen}, author = {M��ller, N., L. Arnaus Gil, N. Eichler, J. Geveler, M. Hager, V. Jansen, M. Patuto, V. Repetto