Citazione Stile APA (7a Edizione)

Underhill, N. (1991). Testing spoken language: A handbook of oral testing techniques. Press syndicate of the University of Cambridge.

Citazione stile Chigago Style (17a edizione)

Underhill, Nic. Testing Spoken Language: A Handbook of Oral Testing Techniques. Cambridge [Cambridgeshire]: Press syndicate of the University of Cambridge, 1991.

Citatione MLA (9a ed.)

Underhill, Nic. Testing Spoken Language: A Handbook of Oral Testing Techniques. Press syndicate of the University of Cambridge, 1991.