I have written a LaTeX package with the help of Dr Iain Phillips that implements citations in the German style—considered by many to be very readable. The package depends on biblatex and has been uploaded to the experimental branch of CTAN.
You can find out more about the package on its page in the TeX Catalogue Online and read the documentation and download it from its directory on CTAN.
If you have any constructive criticism or are experiencing problems with the package, please contact us.