APA (7th ed.) Citation

Otermin, M. S., Pérez Bergliaffa, M., & Karakachoff, E. (1999). Well done!: Level 1 (1a. ed.). Santillana.

Chicago Style (17th ed.) Citation

Otermin, María Silvia, Mercedes Pérez Bergliaffa, and Eduardo Karakachoff. Well Done!: Level 1. 1a. ed. Buenos Aires: Santillana, 1999.

MLA (9th ed.) Citation

Otermin, María Silvia, et al. Well Done!: Level 1. 1a. ed. Santillana, 1999.