Hecker, H., Heusler, A., & Stephan, M. (2017). Einleitung.
Chicago Style (17th ed.) CitationHecker, Hans-Joachim, Andreas Heusler, and Michael Stephan. Einleitung. 2017.
MLA (9th ed.) CitationHecker, Hans-Joachim, et al. Einleitung. 2017.
Warning: These citations may not always be 100% accurate.