Cita APA (7th ed.)

Hemphill, C. F., & Hemphill, R. D. (1979). Security safeguards for the computer. AMACOM.

Cita Chicago (17th ed.)

Hemphill, Charles F., i Robert D. Hemphill. Security Safeguards for the Computer. New York: AMACOM, 1979.

Cita MLA (8th ed.)

Hemphill, Charles F., i Robert D. Hemphill. Security Safeguards for the Computer. AMACOM, 1979.