| akademie-studienbuch.de |
| akademie-studienbuecher.de |
| akademie-verlag.de |
| birkhauser.ch |
| degruyter.com |
| public-history-weekly.degruyter.com |
| degruyter.de |
| oldenbourg.de |
| oldenbourg-link.com |
| oldenbourg-verlag.de |
| public-history-weekly.oldenbourg-verlag.de |
| reference-global.com |
| zza-aag.net |