Cita APA (7a ed.)

Schnabolk, C. (1983). Physical security: Practices and technology. Butterworths.

Cita Chicago Style (17a ed.)

Schnabolk, Charles. Physical Security: Practices and Technology. Boston [u.a.]: Butterworths, 1983.

Cita MLA (8a ed.)

Schnabolk, Charles. Physical Security: Practices and Technology. Butterworths, 1983.