- Author: G.E. Hughes, Max J. Cresswell, Florian Coulmas, Roland Posner, Bernd Wiese
- Language: German
- Year: 1978
- Author: Hughes G.E. Cresswell M.J.
- Language: English
- Year: 1984
- Author: G.E.Hughes M.J.Cresswell
- Language: English
- Year: 1996
- Author: G. E. Hughes M. J. Cresswell
- Language: English
- Year: 1972
- Author: G. E. Hughes M. J. Cresswell
- Language: English
- Year: 1984
- Author: G. E. Hughes M. J. Cresswell
- Language: English
- Year: 1985
- Author: G. E. Hughes M. J. Cresswell
- Language: English
- Year: 1985
- Author: G.E.Hughes M.J.Cresswell
- Language: English
- Year: 1996
- Author: G.E. Hughes M.J. Cresswell
- Language: English
- Year: 1984
- Author: George Edward Hughes M. J. Cresswell
- Language: English
- Year: 1984