- Author: P M S Hacker
- Language: English
- Year: 2013
- Author: Jörg Hacker, Ulrich Dobrindt, Reinhard Kurth
- Language: English
- Year: 2011
- Author: M. R. Bennett P. M. S. Hacker
- Language: English
- Year: 2008
- Author: Will Hacker
- Language: English
- Year: 2013
- Author: Will Hacker
- Language: English
- Year: 2013
- Author: Will Hacker
- Language: English
- Year: 2013
- Author: P. M. S. Hacker
- Language: English
- Year: 2013
- Author: Miles Hacker William S. Messer II Kenneth A. Bachmann
- Language: English
- Year: 2009
- Author: Tobias H. Hacker (auth.)
- Language: German
- Year: 2002