Cita APA (7th ed.)

UNDERHILL, N. (1987). Testing spoken language: A handbook of oral testing.. Cambridge Univ. Press.

Cita Chicago (17th ed.)

UNDERHILL, Nic. Testing Spoken Language: A Handbook of Oral Testing.. New York: Cambridge Univ. Press, 1987.

Cita MLA (9th ed.)

UNDERHILL, Nic. Testing Spoken Language: A Handbook of Oral Testing.. Cambridge Univ. Press, 1987.