Cita APA

Francis, W. N. (1958). The Structure of American English. [s.l.]: [s.e.].

Citación estilo Chicago

Francis, Winthrop Nelson. The Structure of American English. [s.l.]: [s.e.], 1958.

Cita MLA

Francis, Winthrop Nelson. The Structure of American English. [s.l.]: [s.e.], 1958.