Cita APA (7th ed.)

Wolfram, W. (1991). Dialects and american english. Prentice Hall.

Cita Chicago (17th ed.)

Wolfram, Walt. Dialects and American English. Englewood Cliffs: Prentice Hall, 1991.

Cita MLA (9th ed.)

Wolfram, Walt. Dialects and American English. Prentice Hall, 1991.