Understanding Conspiracy Theories
Conspiracy Theories: A Compendium of History's Greatest Mysteries and More Recent Cover-ups
Summersdale
The Big Book of Conspiracy Theories: History's Biggest Delusions and Speculations, From JFK to Area 51, the Illuminati, 9/11, and the Moon Landings
The 10 Greatest Conspiracies of All Time: Decoding History's Unsolved Mysteries
Workman