APA

Klippel F., . (1984). Keep talking, Communicative fluency activities for language teaching. Cambridge: Cambridge University Press.

Chicago

Klippel Friederike, . 1984. Keep talking, Communicative fluency activities for language teaching. Cambridge: Cambridge University Press.

Harvard

Klippel F., . (1984). Keep talking, Communicative fluency activities for language teaching. Cambridge: Cambridge University Press.

MLA

Klippel Friederike, . Keep talking, Communicative fluency activities for language teaching. Cambridge: Cambridge University Press. 1984.