Whitman, Michael E., Principles of information security / Michael E. Whitman, Herbert J. Mattord. - 4th ed. - Boston, MA : Course Technology, 2012. - xxxi, 617 p. : ill. ; 24 cm. Includes bibliographical references and index. ISBN: 9781111138219 LCCN: 2010940654 Subjects--Topical Terms: Computer networks--Security measures.Computer security. LC Class. No.: TK5105.59 / WHI 2012 Dewey Class. No.: 005.8