APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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