Cita APA (7a ed.)

Spears, R. A. (1990). Forbidden American English. NTC Publishing Group.

Cita Chicago Style (17a ed.)

Spears, Richard A. Forbidden American English. Chicago: NTC Publishing Group, 1990.

Cita MLA (8a ed.)

Spears, Richard A. Forbidden American English. NTC Publishing Group, 1990.