Collie, j. (2005). Speaking 3 students book. Kanisius.
Cita Chicago (17th ed.)Collie, jonne. Speaking 3 Students Book. Kanisius, 2005.
Cita MLA (9th ed.)Collie, jonne. Speaking 3 Students Book. Kanisius, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.