- Author: Friedman Lawrence Jacob, Fromm Erich
- Language: English
- Year: 2015
- Author: Friedman Lawrence Jacob, Fromm Erich
- Language: English
- Year: 2015
- Author: Fromm Erich, Schreiber Anke M., Fromm Erich, Friedman Lawrence Jacob
- Language: English
- Year: 2013