Cita APA (7a ed.)

Purpura, P. P. (1989). Modern security & loss prevention management. Butterworths.

Cita Chicago Style (17a ed.)

Purpura, Philip P. Modern Security & Loss Prevention Management. Boston [u.a.]: Butterworths, 1989.

Cita MLA (8a ed.)

Purpura, Philip P. Modern Security & Loss Prevention Management. Butterworths, 1989.