The krak'jya received a brief mention in the Star Wars: Empire at War: Forces of Corruption Expansion: Prima Official Game Guide, which misspelled their name as "kra'jya".
- Shadows of the Empire Planets Guide
- The Essential Guide to Planets and Moons
- Star Wars: Empire at War: Prima Official Game Guide
- Star Wars: Empire at War: Forces of Corruption Expansion: Prima Official Game Guide