- Author: Robert W. Gardner
- Language: English
- Year: 2021
- Author: Bekele Deboch Anshiso
- Language: English
- Year: 2018
- Author: John Schroeder, J. Ellsworth Kalas
- Language: English
- Year: 2010
- Author: Deacon Norman Alexander
- Language: English
- Year: 2020
- Author: Joseph Umidi
- Language: English
- Year: 2019
- Author: Robert M. Hiller
- Language: English
- Year: 2020
- Author: John Miller
- Language: English
- Year: 2018
- Author: Cornelis Bennema
- Language: English
- Year: 2014
- Author: Tim Timmons, Tamrat Layne
- Language: English
- Year: 2016