APA-ийн эшлэл(7 дахь хэвлэлт)

Pfenninger, S. E. (2014). Contact, variation, and change in the history of English. John Benjamins Publishing Company.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Pfenninger, Simone E. Contact, Variation, and Change in the History of English. Amsterdam, Netherlands: John Benjamins Publishing Company, 2014.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Pfenninger, Simone E. Contact, Variation, and Change in the History of English. John Benjamins Publishing Company, 2014.