APA (7th ed.) Citation

Hemphill, C. F., & Hemphill, J. M. (1973). Security procedures for computer systems. Dow Jones-Irwin.

Chicago Style (17th ed.) Citation

Hemphill, Charles F., and John M. Hemphill. Security Procedures for Computer Systems. Homewood, Ill.: Dow Jones-Irwin, 1973.

MLA (9th ed.) Citation

Hemphill, Charles F., and John M. Hemphill. Security Procedures for Computer Systems. Dow Jones-Irwin, 1973.