Members of the Pui-ui species, who were sentient, used Pui-ui language to communicate. This language was characterized by a diverse array of high-pitched noises.
- A Guide to the Star Wars Universe (Initial mention)
- A Guide to the Star Wars Universe, Second Edition, Revised and Expanded (Initially identified as Pui-ui language)
- Star Wars Encyclopedia (Only indirectly mentioned)
- A Guide to the Star Wars Universe, Third Edition, Revised and Expanded
- The Complete Star Wars Encyclopedia , Vol. III ("Pui-ui") (Only indirectly mentioned)