Cita APA

Marckwardt, A. H. (1980). American english (2a. ed.). New York: Oxford University Press.

Citación estilo Chicago

Marckwardt, Albert H. American English. 2a. ed. New York: Oxford University Press, 1980.

Cita MLA

Marckwardt, Albert H. American English. 2a. ed. New York: Oxford University Press, 1980.