- Author: Peter J. Simmons David Young
- Language: English
- Year: 1999
- Author: David Young Cheryl Young
- Language: English
- Year: 2010
- Author: David Sherman David Young Harris Collingwood
- Language: English
- Year: 2003
- Author: Peter J. Simmons David Young
- Language: English
- Year: 2003
- Author: Philip Kotler Hermawan Kartajaya S. David Young
- Language: English
- Year: 2004
- Author: David Young Cheryl Young
- Language: English
- Year: 2010
- Author: David Young
- Language: English
- Year: 2001
- Author: David Young
- Language: English
- Year: 2001
- Author: David Young Cheryl Young
- Language: English
- Year: 2010