- Author: Paarlberg Robert L
- Language: English
- Year: 2009
- Author: Mathiasen Helle
- Language: Danish
- Year: 2003
- Author: Botsman Rachel, Rogers Roo
- Language: English
- Year: 2010
- Author: Tomasello Michael
- Language: English
- Year: 2016
- Author: Tomasello Michael
- Language: English
- Year: 2016
- Author: Mapp Susan C
- Language: English
- Year: 2014