Cita APA (7a ed.)

Klippel F. Friederike. (1999). Keep Talking: Communicative fluency activities for language teaching. New York, Cambridge University Press, 1999.

Cita Chicago Style (17a ed.)

Klippel F. Friederike. Keep Talking: Communicative Fluency Activities for Language Teaching. New York, Cambridge University Press, 1999, 1999.

Cita MLA (9a ed.)

Klippel F. Friederike. Keep Talking: Communicative Fluency Activities for Language Teaching. New York, Cambridge University Press, 1999, 1999.