- Author: Mark P.O. Morford
- Language: French
- Year: 2017
- Author: Mark P.O. Morford
- Year: 1967
- Author: MARK P. O. MORFORD & ROBERT J . LENARDON
- Language: English
- Year: 2003
- Author: Mark P. O. Morford Robert J. Lenardon
- Language: English
- Year: 2002
- Author: Mark P.O. Morford Robert J. Lenardon
- Language: English
- Year: 1985