APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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