- Author: Gordon Smith-Durán, Cynthia Smith-Duran
- Language: English
- Year: 2015
- Author: Gordon Smith-Durán, Cynthia Smith-Durán
- Language: English
- Year: 2016
- Author: Gordon Smith-Durán, Cynthia Smith-Durán
- Language: English
- Year: 2015
- Author: Gordon Smith-Durán, Cynthia Smith-Durán
- Language: English
- Year: 2018