Warhammer 40,000 Rulebook: Rick Priestley, Andy Chambers, Alessio Cavatore, Pete Haines, Anthony Reynolds, Jervis Johnson, Adam Troke: 9781841548753: Amazon.com: Books
The Great Devourer: Leviathan Omnibus (Warhammer 40,000): 9781804074237: Various: Books - Amazon.com
Warhammer 40,000 Compendium: Andy Chambers: 9781869893712: Amazon.com: Books