Herbst, T., & Mittmann, B. How can American English and British English be recognised?: Arguments in favour of shifting the focus in the study of language varieties toward(s) use and perception / Thomas Herbst. Cultural encounters in the New World : literatur- und kulturwissenschaftliche Beiträge zu kulturellen Begegnungen in der Neuen Welt.(2003).

Herbst, Thomas, and Brigitta Mittmann. "How Can American English and British English Be Recognised?: Arguments in Favour of Shifting the Focus in the Study of Language Varieties Toward(s) Use and Perception / Thomas Herbst." Cultural Encounters in the New World : Literatur- Und Kulturwissenschaftliche Beiträge Zu Kulturellen Begegnungen in Der Neuen Welt.(2003) .

Herbst, Thomas, and Brigitta Mittmann. "How Can American English and British English Be Recognised?: Arguments in Favour of Shifting the Focus in the Study of Language Varieties Toward(s) Use and Perception / Thomas Herbst." Cultural Encounters in the New World : Literatur- Und Kulturwissenschaftliche Beiträge Zu Kulturellen Begegnungen in Der Neuen Welt.(2003), .