PORTER, W.Thomas Perry, William E. EDP: controls and auditing / [by] W.Thomas Porter, William E.Perry - 2nd ed. - Belmont Wadsworth pub. 1977 - 266 p. Includes appendix, glossary & index. ISBN: 534005349 Subjects--Topical Terms: Auditing Dewey Class. No.: 657.45 / POR