Cita APA (7a ed.)

Hill, D. A., & Rockley, L. . . . . . . . . E. (1981). Security: Its management and control. Business Books.

Cita Chicago Style (17a ed.)

Hill, Denys A., y L E. Rockley. Security: Its Management and Control. London: Business Books, 1981.

Cita MLA (9a ed.)

Hill, Denys A., y L E. Rockley. Security: Its Management and Control. Business Books, 1981.