Author: Wendy Abraham
- Reference
- Planeta Publishing Corporation
- ISBN: 9786070710513
- Release Date: 08-07-2012

Author: Santillana
- Reference
- Español Santillana
- ISBN: 9788493668891
- Release Date: 07-30-2012

Author: Manuel Seco, Olimpia Andrés, Gabino Ramos
- Reference
- Aguilar S a De Ediciones-Grupo
- ISBN: 9788403097254
- Release Date: 06-30-2012

Author: Joseph Murphy
- Reference
- Ediciones Obelisco
- ISBN: 9788497778121
- Release Date: 05-01-2012

Author: Real Academia de la Lengua española
- Reference
- Santillana USA Publishing Company
- ISBN: 9788429450880
- Release Date: 03-22-2012