- Author: Paul Hartley Gertrud Robins
- Language: German, English
- Year: 2005
- Author: Paul Hartley
- Language: English
- Year: 2022
- Author: Paul Hartley
- Language: English
- Year: 2006
- Author: Paul Hartley Derrik Ferney (eds.)
- Language: English
- Year: 1990
- Author: Paul Hartley B.A. M.Phil. Ph.D. F.I.L. (auth.)
- Language: English
- Year: 1989
- Author: Paul Hartley
- Language: English
- Year: 2006
- Author: Paul Hartley
- Language: German
- Year: 1995
- Author: Paul Hartley
- Language: English
- Year: 1997
- Author: Paul Hartley
- Language: English
- Year: 2006
- Author: Paul Hartley
- Language: English
- Year: 1997