- Author: Barry Cooper
- Language: English
- Year: 2009
- Author: Martin Willis
- Language: English
- Year: 2013
- Author: G. P. Gooch, D. Litt
- Language: English
- Year: 2000
- Author: Craig Symonds
- Language: English
- Year: 2010
- Author: Alexander L. Cobb
- Language: English
- Year: 2012
- Author: Richard A. Gabriel
- Language: English
- Year: 2000
- Author: Alasdair Blair, Steven Curtis, Steven Curtis
- Language: English
- Year: 2009
- Author: Hope Lourie Killcoyne, Britannica Educational Publishing Staff
- Language: English
- Year: 2014
- Author: Lorna Bleach, Keira Borrill, Lorna Bleach, Keira Borrill
- Language: English
- Year: 2013
- Author: Julio A Gonzalo, Manuel M Carreira
- Language: English
- Year: 2013