- Author: Robert Harrison
- Language: English
- Year: 2012
- Author: Albert Peel, Leland H. Carlson, Robert Harrison, Robert Browne
- Language: English
- Year: 2003
- Author: Joseph LaDou Robert Harrison
- Language: English
- Year: 2014
- Author: Joseph LaDou Robert Harrison
- Language: English
- Year: 2014
- Author: Robert Harrison Calvin Brown
- Language: English
- Year: 1985