EDP, controls and auditing / W. Thomas Porter, William E. Perry. E.D.P., controls and auditing. Porter, W. Thomas. Perry, William E. Electronic data processing departments Auditing. HF5548.35 .P67 1984 657.4502854 19 POE Includes index. Bibliography: p. 565-567. Boston, Mass. : Kent Pub. Co., c1984. c1984. 1984 Text xvii, 571 p. : eng