9780521701464 | 5th edition (Cambridge Univ Pr, September 30, 2007), cover price $33.00 | About this edition: Computability and Logic has become a classic because of its accessibility to students without a mathematical background and because it covers not simply the staple topics of an intermediate logic course, such as Godel's incompleteness theorems, but also a large number of optional topics, from Turing's theory of computability to Ramsey's theorem.