Underhill, N. (1991). Testing spoken language: A handbook of oral testing techniques. Press syndicate of the University of Cambridge.
Citação norma ChicagoUnderhill, Nic. Testing Spoken Language: A Handbook of Oral Testing Techniques. Cambridge [Cambridgeshire]: Press syndicate of the University of Cambridge, 1991.
Citação norma MLAUnderhill, Nic. Testing Spoken Language: A Handbook of Oral Testing Techniques. Press syndicate of the University of Cambridge, 1991.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.