- Author: Ackermann Lutz, Goj Habgood Laurel, Gunnoe T. Brent
- Language: English
- Year: 2018
- Author: Robert John Ackermann
- Language: English
- Year: 2014
- Author: Ackermann Alice.
- Language: English
- Author: Ackermann Irmgard.
- Language: German
- Author: Ackermann Rudolf.
- Language: English
- Author: Volker Wahl Ute Ackermann (eds.)
- Language: German
- Year: 2001
- Author: Paul W. Ackermann David A. Hart (eds.)
- Language: English
- Year: 2016
- Author: Christiane Ackermann Michael Egerding (ed.)
- Language: German
- Year: 2015