MLA

Stallings, William, et al. Computer Security : Principles and Practice. 2nd ed. / Boston (Mass.): Pearson, 2012.

APA

Stallings, W., Bhattacharjee, A. Kumar, Brown, L. V., & Mukherjee, S. (2012). Computer security : principles and practice. 2nd ed. / Boston (Mass.): Pearson.

Chicago

Stallings, William, Arup Kumar Bhattacharjee, Lawrence V. Brown, and Soumen Mukherjee. Computer Security: Principles and Practice. 2nd ed. / Boston (Mass.): Pearson, 2012.