Otermin, M. S. (2007). Well done! 2007. Level 3 (3a. ed.). Santillana-Richmond Publishing.
Cita Chicago (17th ed.)Otermin, María Silvia. Well Done! 2007. Level 3. 3a. ed. Buenos Aires: Santillana-Richmond Publishing, 2007.
Cita MLA (9th ed.)Otermin, María Silvia. Well Done! 2007. Level 3. 3a. ed. Santillana-Richmond Publishing, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.