- Author: Román De La Vara Salazar, Humberto Gutiérrez Pulido
- Language: Spanish
- Year: 2009
- Author: Humberto Gutiérrez Pulido, Román de la Vara Salazar
- Language: Spanish
- Year: 2009
- Author: Humberto Gutiérrez Pulido
- Language: Spanish
- Year: 2014
- Author: Humberto Gutiérrez Pulido
- Language: Spanish
- Year: 2014
- Author: Humberto Gutiérrez Pulido
- Language: Spanish
- Year: 2010