Doff, a. (2005). Listening Student book 3. Kanisius.
Cita Chicago (17th ed.)Doff, andrian. Listening Student Book 3. Kanisius, 2005.
Cita MLA (9th ed.)Doff, andrian. Listening Student Book 3. Kanisius, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.