ISBN: 1429555424 (electronic bk. : Adobe Digital Editions)
ISBN: 1429555432 (electronic bk. : Kindle)
ISBN: 1429555459 (electronic bk. : Mobipocket Reader)
ISBN: 9781429555425 (electronic bk. : Adobe Digital Editions)
ISBN: 9781429555432 (electronic bk. : Kindle)
ISBN: 9781429555456 (electronic bk. : Mobipocket Reader)