Cita APA (7th ed.)

Wilkins, D. A. (1974). Second-language learning and teaching. Edward Arnold.

Cita Chicago (17th ed.)

Wilkins, D. A. Second-language Learning and Teaching. Londres: Edward Arnold, 1974.

Cita MLA (9th ed.)

Wilkins, D. A. Second-language Learning and Teaching. Edward Arnold, 1974.