- Author: Neuhouser Frederick
- Language: English
- Year: 2015
- Author: Hochstrasser Tim J
- Language: English
- Year: 2000
- Author: Saccenti Riccardo, saint Thomas d'Aquin
- Language: English
- Year: 2016
- Author: Leonard Krieger
- Language: English
- Year: 1965
- Author: Tuck Richard
- Language: English
- Year: 1979