Buck, G. (2006). Assessing listening (6th print.). Cambridge University.
Cita Chicago Style (17a ed.)Buck, Gary. Assessing Listening. 6th print. Cambridge: Cambridge University, 2006.
Cita MLA (9a ed.)Buck, Gary. Assessing Listening. 6th print. Cambridge University, 2006.
Precaución: Estas citas no son 100% exactas.