Purpura, P. P. (2007). Terrorism and homeland security: An introduction with applications. Butterworth-Heinemann.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPurpura, Philip P. Terrorism and Homeland Security: An Introduction with Applications. Amsterdam ; Boston: Butterworth-Heinemann, 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPurpura, Philip P. Terrorism and Homeland Security: An Introduction with Applications. Butterworth-Heinemann, 2007.
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