Cita APA (7a ed.)

Mackay, R. e. a. (1981). Languages for specific purposes. Newbury.

Cita Chicago Style (17a ed.)

Mackay, Ronald et al. Languages for Specific Purposes. New York, Estados Unidos: Newbury, 1981.

Cita MLA (9a ed.)

Mackay, Ronald et al. Languages for Specific Purposes. Newbury, 1981.