APA-referens (7:e uppl.)

Butterfield, A. (2009). The familiar enemy: Chaucer, language, and nation in the Hundred Years War. Oxford University Press.

Chicago-referens (17:e uppl.)

Butterfield, Ardis. The Familiar Enemy: Chaucer, Language, and Nation in the Hundred Years War. Oxford ; New York: Oxford University Press, 2009.

MLA-referens (9:e uppl.)

Butterfield, Ardis. The Familiar Enemy: Chaucer, Language, and Nation in the Hundred Years War. Oxford University Press, 2009.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.