Cita APA (7a ed.)

Green, G., & Fischer, R. J. (1987). Introduction to security (4. ed.). Butterworths.

Cita Chicago Style (17a ed.)

Green, Gion, y Robert J. Fischer. Introduction to Security. 4. ed. Boston [u.a.]: Butterworths, 1987.

Cita MLA (9a ed.)

Green, Gion, y Robert J. Fischer. Introduction to Security. 4. ed. Butterworths, 1987.