- Author: Paul F. Gordon, Peter Gregory
- Language: English
- Year: 1984
- Author: Walter Reid, Paul Birch, Gordon Masterton
- Language: English
- Year: 2016
- Author: Paul Bowles, Gordon White
- Language: English
- Year: 1993
- Author: Ioannis Tsalavoutas, Paul D. Gordon, Pauline Weetman
- Language: English
- Year: 2020
- Author: Paul MasonMike Gordon
- Language: English
- Year: 2014
- Author: Hugh Drummond (auth.) Paul Patrick Gordon Bateson Peter H. Klopfer (eds.)
- Language: English
- Year: 1981
- Author: Dr. Paul Francis Gordon Mr. Peter Gregory (auth.)
- Language: English
- Year: 1987