APA-referens (7:e uppl.)
Pfenninger, S. E. (2014). Contact, variation, and change in the history of English. John Benjamins Publishing Company.
Chicago-referens (17:e uppl.)
Pfenninger, Simone E. Contact, Variation, and Change in the History of English. Amsterdam, Netherlands: John Benjamins Publishing Company, 2014.
MLA-referens (9:e uppl.)
Pfenninger, Simone E. Contact, Variation, and Change in the History of English. John Benjamins Publishing Company, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.