- Author: M. Edwards P Parvis Hubert Young
- Language: English
- Year: 2006
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- Year: 2007
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- Language: German
- Year: 2013
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- Language: English
- Year: 2013
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- Year: 1994
- Author: Richard Andrews
- Language: English
- Year: 2013
- Author: František Čermák Michal Křen
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- Year: 2011
- Author: Jean-Louis Brunaux
- Language: French
- Year: 1987
- Author: Sylvan Barnet Hugo Bedau
- Language: English
- Year: 2013
