- Author: Zidowecki Erik.
- Language: Spanish-English
- Author: Hidalgo Andrea Fabiana.
- Language: Spanish
- Author: Hidalgo Andrea Fabiana.
- Language: Spanish
- Author: Torrego L.
- Language: Spanish
- Author: Тарасова В.В. Чупрыгина Е.А.
- Language: Русский-Spanish
- Author: Berlitz School.
- Language: Spanish-English
- Author: Stockwell R.P. Bowen J.D. Silva-Fuenzalida I.
- Language: Spanish-English
