Wilhelm Grube (1855-1908): Die Sprache und Schrift der Jučen (Leipzig: Harrassowitz 1896)
- Digitized:
> Bavarian State Library (digitized: 10 July 2012)
> Internet Archive (Book from the collections of University of California; digitizing sponsor: Google) - Bibliographic reference: BS 2726
- Entry in Wiener China-Bibliographie