
- Author: Daniel R. Tomal, Craig A. Schilling
- Language: English
- Year: 2018

- Author: Scott M. Norton, Larry Kelly
- Language: English
- Year: 1997

- Author: Todd Whitaker, Douglas Fiore
- Language: English
- Year: 2004

- Author: Karla Reiss
- Language: English
- Year: 2012

- Author: John F. Eller, Sheila A. Eller
- Language: English
- Year: 2009

- Author: David Middlewood, Jacky Lumby
- Language: English
- Year: 1999