Cita APA (7th ed.)

Richards, J. C., & Schmidt, R. W. (1983). Language and communication. Longman.

Cita Chicago (17th ed.)

Richards, Jack C., i Richard W. Schmidt. Language and Communication. Londres: Longman, 1983.

Cita MLA (9th ed.)

Richards, Jack C., i Richard W. Schmidt. Language and Communication. Longman, 1983.