APA (7th ed.) Citation

Purpura, P. P.. (2011). Security: An introduction. Taylor & Francis Group.

Chicago Style (17th ed.) Citation

Purpura, Philip P. Security: An Introduction. Boca Raton, Florida: Taylor & Francis Group, 2011.

MLA (9th ed.) Citation

Purpura, Philip P. Security: An Introduction. Taylor & Francis Group, 2011.