- Author: Duane P. Schultz/Sydney Ellen Schultz
- Language: English
- Year: 2016
- Author: Tyson Philip John, Jones Dai, Elcock Jonathan
- Language: English
- Year: 2011
- Author: Brock Adrian C
- Language: English
- Year: 2009
- Author: Hergenhahn B. R
- Language: English
- Year: 2009
- Author: John C. Malone Jr:
- Language: English
- Year: 2009
- Author: Robinson Daniel N
- Language: English
- Year: 1995