- Author: Jan Leighton Hallie Leighton
- Language: English
- Year: 2003
- Author: Birthe Scheffler
- Language: German
- Year: 2015
- Author: John Warner
- Language: English
- Year: 5
- Author: Patricia T. O’Conner
- Language: English
- Year: 5
- Author: Elena Di Giovanni Yves Gambier
- Language: English
- Year: 2018
- Author: Olga Pilkington
- Language: English
- Year: 2018
- Author: Sigurd D’hondt Jan-Ola Östman Jef Verschueren
- Language: English
- Year: 2009
- Author: Lieven D’hulst Yves Gambier
- Language: English
- Year: 2018
- Author: Edward Fiske Jane Mallison Margery Mandell
- Language: English
- Year: 2018
- Author: Jenny Dumont
- Language: English
- Year: 2016