The Dungeon Masters
- Interview with Pete Austin of Level 9.
- http://www.nvg.ntnu.no/sinclair/industry/publishers/level9_su0585.htm

Level 9: Past Masters of the Adventure Game
- Article by Richard Hewison from Classix Fanzine.
- http://www.waddington.fslife.co.uk/level9.htm

Adventureland: Level 9 Computing
- Short company information and a detailed list of the adventures they published.
- http://www.if-legends.org/~adventure/Level_9_Computing.html

The Level 9 Fact List
- Comprehensive source of information on Level 9 games and packaging.
- ftp://ftp.gmd.de/if-archive/level9/info/Level9_Facts.txt

Sinclair User: On the level
- "Another time, another space. Chris Bourne reaches Level 9" Interview with Nick and Pete Austin of Level 9.
- http://www.sincuser.f9.co.uk/038/htsquad.htm