- Author: Melanie L.J. Stiassny Lynne R. Parenti G. David Johnson
- Language: English
- Year: 1996
- Author: Robert David Johnson
- Language: English
- Year: 2005
- Author: David Johnson Christina Erneling
- Language: English
- Year: 1997
- Author: Melanie L.J. Stiassny Lynne R. Parenti G. David Johnson
- Language: English
- Year: 1996
- Author: Jonathan Snook Steve Smith Jina Bolton Cameron Adams David Johnson
- Language: English
- Year: 2007