- Author: Head Barclay Vincent
- Language: English
- Year: 1968
- Author: Razvan Paraianu
- Language: English
- Year: 2018
- Author: Aurel Codoban
- Language: romanian
- Year: 1995
- Author: Henry W. P.
- Language: English
- Year: 1966
- Author: William Patrick Henry
- Language: English
- Year: 1967
- Author: Earl Donald C., Sallust
- Language: English
- Year: 1969
- Author: Goodwin Jason
- Language: English
- Year: 2013
- Author: Thomas Francis Carney
- Language: English
- Year: 1970
- Author: John Michell Jason Goodwin
- Language: English
- Year: 2012