1. The Wolio language: Outline of grammatical description and texts;Anceaux,1952
2. Li'onesisch-Deutsches Wörterbuch;Arndt,1933
3. Wörterbuch der Ngadhasprache;Arndt,1961
4. Dictionnaire cham-français;Aymonier,1906
5. Phonological units in Cham;Blood;AL,1967