APA-referens (7:e uppl.)

Marckwardt, A. H. (1958). American English. Oxford University Press.

Chicago-referens (17:e uppl.)

Marckwardt, Albert Henry. American English. New York: Oxford University Press, 1958.

MLA-referens (9:e uppl.)

Marckwardt, Albert Henry. American English. Oxford University Press, 1958.