- Author: Heinrich Holland Doris Holland
- Language: German
- Year: 2021
- Author: Heinrich Holland Doris Holland
- Language: German
- Year: 2021
- Author: Heinrich Holland Doris Holland
- Language: German
- Year: 2016
- Author: Heinrich Holland Doris Holland (auth.)
- Language: German
- Year: 2014
- Author: Heinrich Holland Doris Holland
- Language: German
- Year: 2012
- Author: Heinrich Holland Doris Holland (auth.)
- Language: German
- Year: 2006
- Author: Heinrich Holland Doris Holland (auth.)
- Language: German
- Year: 1989
- Author: Heinrich Holland Doris Holland (auth.)
- Language: German
- Year: 2008
- Author: Heinrich Holland Doris Holland (auth.)
- Language: German
- Year: 1996
- Author: Heinrich Holland Doris Holland (auth.)
- Language: German
- Year: 1993