- Author: José Unpingco
- Language: English
- Year: 2014
- Author: José Unpingco
- Language: English
- Year: 2022
- Author: José Unpingco
- Language: English
- Year: 2018
- Author: José Unpingco
- Language: English
- Year: 2016
- Author: José Unpingco
- Language: English
- Year: 2021
- Author: José Unpingco
- Language: English
- Year: 2021
- Author: José Unpingco
- Language: English
- Year: 2019
- Author: José Unpingco (auth.)
- Language: English
- Year: 2016
- Author: José Unpingco (auth.)
- Language: English
- Year: 2014