Cita APA

Underhill, N., & Underhill, N. (1987). Testing spoken language: A handbook of oral testing techniques. Cambridge, UK: Cambridge University Press.

Citación estilo Chicago

Underhill, Nic, y Nic Underhill. Testing Spoken Language: A Handbook of Oral Testing Techniques. Cambridge, UK: Cambridge University Press, 1987.

Cita MLA

Underhill, Nic, y Nic Underhill. Testing Spoken Language: A Handbook of Oral Testing Techniques. Cambridge, UK: Cambridge University Press, 1987.