- Author: Robert J. Hume
- Language: English
- Year: 2009
- Author: Robert J Hume
- Language: English
- Year: 2018
- Author: Hume David, Fogelin Robert J., Hume David
- Language: English
- Year: 2003
- Author: Hume David, Fogelin Robert J., Hume David
- Language: English
- Year: 2003
- Author: Robert J. Hume
- Language: English
- Year: 2013