Παραπομπή σε μορφή APA (7η εκδ.)

Purpura, P. P. (2007). Terrorism and homeland security: An introduction with applications. Butterworth-Heinemann.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Purpura, Philip P. Terrorism and Homeland Security: An Introduction with Applications. Amsterdam ; Boston: Butterworth-Heinemann, 2007.

Παραπομπή σε μορφή MLA (9th εκδ.)

Purpura, Philip P. Terrorism and Homeland Security: An Introduction with Applications. Butterworth-Heinemann, 2007.