Langer, Nils u. Winifred Davies (Hg.). 2005. Linguistic Purism in the Germanic LanguagesBerlin: De Gruyter.

Langer, Nils. 2008. 'German Language and German Identity in America – Evidence from school grammars 1860-1918.' In: German Life and Letters. 497-513.

Langer, Nils. 2009. 'Sociolinguistic Changes in the History of Low German.' In: Horan, Geraldine, Nils Langer u. Sheila Watts (Hg.). Landmarks in the History of German. Oxford: Peter Lang. 211-232. 
Langer, Nils. 2011. 'Historical Sociolinguistics in Nineteenth-Century Schleswig Holstein - Evidence from School inspection Reports.' In: German Life and Letters 64. 167-187.

Langer, Nils. 2012a. 'Finding Non-Dominant Languages in the Nineteenth Century - Problems and Potentials from Historical Sociolinguistics.' In: Muhr, Rudolf (Hg.). Non-dominating Varietes of Pluricentric Languages. Wien: Peter Lang. 83-106.

Langer, Nils. 2012b. 'Die Lesebuchfrage in Schleswig-Holstein (1864-1870).' In: Bär, Jochen u. Markus Müller (Hg.). Geschichte der Sprache - Sprache der Geschichte. Berlin: Akademie Verlag. 565-584.

Langer, Nils u. Stephan Elspaß. 2012. 'Jespersen’s Cycle and the History of German Negation – Challenges from a Sociolinguistic Perspective.' In: Neuphilologische Mitteilungen CXIII. 275-292.
Langer, Nils u. Robert Langhanke. 2013. 'Metalinguistic Discourses on Low German in the Nineteenth Century.' In: Linguistic-online.de 58. 77-97.
Langer, Nils. 2013. 'Norddeutsches in holsteinischen Soldatenbriefen.' In: Niederdeutsches Jahrbuch 136. 73-95.
Langer, Nils. 2014. 'Language Policies in the Duchy of Schleswig under Denmark and Prussia. In: Healy, Roisin & Enrico dal Lago (eds.). The Shadows of Colonialism in Europe's Modern Past. Basingstoke: Palgrave Macmillan. 73-91.
Langer, Nils  u.  Anna Havinga. 2014. 'Sprache im Alltage der Frühen Neuzeit.' In: Tienken, Susanne & D. Stoeva-Holm (eds.). von Koechinnen und Gelehrten, von Adeligen und Soldaten. Uppsala: Uppsala Universitet. 155-178.
Langer, Nils u. Anna Havinga. 2015. 'Invisible Languages in Historical Sociolinguistics: A Conceptual Outline, With Examples from the German-Danish Borderlands.' In: Havinga, A. & N. Langer (eds.) Invisible Languages in the Nineteenth Century. Oxford: Peter Lang.
Jacob-Owens, Timothy. 2016. 'Linguistic variation "from below": Northern German in nineteenth-century North Frisia.' Working Papers of the Linguistics Circle of the University of Victoria 26(1). 58-72.
Jacob-Owens, Timothy. 2017. Multilingualism on Amrum: Language contact and variation 1839-1851 (=Estrikken/Ålstråke 105). Kiel: Friesische Philologie/Nordfriesische Wörterbuchstelle.