Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

Richards, Jack C., y Richard W. Schmidt. Language and Communication. London [etc.]: Longman, 1983.

Cita MLA (9a ed.)

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