- Secrets of Tatooine (First mentioned) (Indirect mention only)
- The Official Star Wars Fact File 121 (TRO1-2, Troigs) (Indirect mention only)
- The New Essential Guide to Alien Species (First identified as Vannell system) (First pictured)
- The Essential Atlas (As "Pollillus system")
- (As "Pollillus system")
Notes and referencesEdit
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