Citazione APA

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

Stile di citazione Chicago

Underhill, Nic. Testing Spoken Language: A Handbook of Oral Testing Techniques. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1987.

Citazione MLA

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