- Author: Jelen Bill, Syrstad Tracy
- Language: English
- Year: 2018
- Author: Jelen Bill, Syrstad Tracy
- Language: English
- Year: 2010
- Author: Syrstad Tracy, Jelen Bill
- Language: English
- Year: 2010
- Author: Jelen Bill, Syrstad Tracy
- Language: English
- Year: 2013
- Author: Jelen Bill Syrstad Tracy.
- Language: English