- Author: Andrea Natzahuatza, Luis Ruiz
- Language: Spanish, Castilian
- Year: 2023
- Author: Wenjie Xia Luis Ruiz Pestana
- Language: English
- Year: 2022
- Author: José Luis Ruiz Muñoz
- Language: Spanish
- Year: 2002
- Author: Juan Luis Ruiz de la Peña
- Language: Spanish
- Year: 1996
- Author: José Luis Ruiz Pérez
- Language: Spanish
- Year: 2018
- Author: Elsa Galarza Francisco Galarza José Luis Ruiz
- Language: Spanish
- Year: 2015
- Author: Jose-Luis Ruiz
- Language: English
- Year: 2017