Leagues of Cthulhu
Unknown
Keep on the Shadowfell (including Quick-Start Rules)
Wizards of the Coast
Star Trek: Corp of Engineers - 028 - Breakdowns
Keith R. A. Decandido
Star Trek: Corp of Engineers (28)
TSR 9566 A Saga Companion
Great Britain [electronic resource]: handbook for travellers
Karl Baedeker (Firm)