It was written by and Eva Kolberg and published by Franzis' Verlag as part of their "Hot Stuff" series. This 448-page guide was designed as a comprehensive reference for the 2003 version of Microsoft Word and typically included a CD-ROM with additional resources.
The book you are looking for is titled (Word 2003: Compact Know-how for the Perfect Use of Word). Word 2003. Das kompakte Know-how zum perfekten ...
If you are looking for general instructions on how to use Word 2003 today, digital archives like the Internet Archive host similar comprehensive manuals such as "Microsoft Office Word 2003 Complete". It was written by and Eva Kolberg and