- Author: Plotkin Bill
- Language: English
- Year: 2008
- Author: Erikson Erik Homburger, Erikson Joan Mowat
- Language: English
- Year: 2013
- Author: Entwicklungspsychologie, Kreativität, Sawyer Robert Keith
- Language: English
- Year: 2003
- Author: Khalakdina Margaret
- Language: English
- Year: 2008
- Author: Zimpel André Frank
- Language: German
- Year: 2014
- Author: Dahlke Ruediger
- Language: German
- Year: 2014
- Author: Bloom Paul, Krips-Schmidt Katrin
- Language: German
- Year: 2014
- Author: Döring Peter, Schultz-Venrath Ulrich
- Language: German
- Year: 2015
- Author: Bendicsen Harold K., Koch Barry J., Palombo Joseph
- Language: English
- Year: 2009
- Author: Nelson Charles Alexander
- Language: English
- Year: 2000