The ISBN of Why Truth Matters is 9780826476081.
The ISBN of Why Darwin Matters is 0805081216.
The ISBN of On What Matters is 978-0-19-926592-3.
The ISBN of Celestial Matters is 0-312-85934-1.
The ISBN of Why Orwell Matters is 0-465-03050-5.
The ISBN of The Truth About Diamonds is 0060820489.
The ISBN of The Truth About Muhammad is 9781596980280.
The ISBN of Questions of Truth is 0664233511.
The ISBN of The Keepers of Truth is 0743218035.
The ISBN for "An Inconvenient Truth" by Al Gore is 9781594865671.
The ISBN of The Truth-Teller's Tale is 0670060003.
The ISBN of The Other Side of Truth is 9780141304762.
The ISBN of Plain Truth is 0-671-77613-4.