- Author: White Mark D., Arp Robert
- Language: English
- Year: 2008
- Author: Mark D. White, Robert Arp
- Language: English
- Year: 2008
- Author: Mark D. White, Robert Arp
- Language: English
- Year: 2008
- Author: Lee Ang, Arp Robert, Barkman Adam, McRae James
- Language: English
- Year: 2013
- Author: Robert Arp
- Language: English
- Year: 2017
- Author: Arp Robert, Hunt Roger
- Language: English
- Year: 2015
- Author: Arp Robert, Kant Immanuel, Plato., Watson Jamie Carlin
- Language: English
- Year: 2012
Gandhi
epub
- Author: Arp Susmita, Gandhi Mohandas Karamchand
- Language: German
- Year: 2015
- Author: Arp Robert
- Language: English
- Year: 2014
- Author: Arp Robert, Baltzer-Jaray Kimberly
- Language: English
- Year: 2013