- Author: Anthony T. Velte, Toby J. Velte Ph.D., Robert Elsenpeter
- Language: English
- Year: 2010
- Author: Toby J. Velte Anthony T. Velte
- Language: English
- Year: 2013
- Author: Velte Anthony T., Velte Toby J
- Language: English
- Year: 2014
- Author: Toby J. Velte Amy Hanson Anthony T. Velte
- Language: English
- Year: 2000
- Author: Toby J. Velte Amy Hanson Anthony T. Velte
- Language: English
- Year: 2000