Zullo, Davide; Pfenninger, Simone E; Schreier, Daniel (2021). A pan-Atlantic 'multiple modal belt'?.American Speech: a Quarterly of Linguistic Usage, 96(1):7-44.
Pfenninger, Simone; Singleton, David (2018). Bilingualism in midlife. In: De Houwer, Annick; Ortega, Lourdes. The Cambridge Handbook of Bilingualism. Cambridge: Cambridge University Press, 76-100.