- Author: Peter Goodwin Heltzel
- Language: English
- Year: 2012
- Author: Peter Slade, Charles Marsh, Peter Goodwin Heltzel
- Language: English
- Year: 2013
- Author: Peter Goodwin Heltzel
- Language: English
- Year: 2009
- Author: Kay Higuera Smith, Jayachitra Lalitha, L. Daniel Hawk, Richard Twiss, Peter Goodwin Heltzel, Amos Yong
- Language: English
- Year: 2014