Cita APA (7a ed.)

Klippel, F. (1992). Keep talking: Communicative fluency activities for language teaching. Cambridge University Press.

Cita Chicago Style (17a ed.)

Klippel, Friederike. Keep Talking: Communicative Fluency Activities for Language Teaching. Cambridge: Cambridge University Press, 1992.

Cita MLA (8a ed.)

Klippel, Friederike. Keep Talking: Communicative Fluency Activities for Language Teaching. Cambridge University Press, 1992.