Cita APA (7th ed.)

HEARNDEN , K. (1987). HD BK OF COMPUTER SECURITY. KOGAN PAGE.

Cita Chicago (17th ed.)

HEARNDEN , KEITH. HD BK OF COMPUTER SECURITY. LONDON: KOGAN PAGE, 1987.

Cita MLA (9th ed.)

HEARNDEN , KEITH. HD BK OF COMPUTER SECURITY. KOGAN PAGE, 1987.