Cita APA

Collie, J., Slater, S., & Doff, A. (1991). Speaking 2. Cambridge: Cambridge University Press.

Citación estilo Chicago

Collie, Joanne, Stephen Slater, and Adrian Doff. Speaking 2. Cambridge: Cambridge University Press, 1991.

Cita MLA

Collie, Joanne, Stephen Slater, and Adrian Doff. Speaking 2. Cambridge: Cambridge University Press, 1991.