APA (7th ed.) Citation

Walker, D. C. (2012). Mass notification and crisis communications: Planning, preparedness, and systems. CRC Press.

Chicago Style (17th ed.) Citation

Walker, Denise C. Mass Notification and Crisis Communications: Planning, Preparedness, and Systems. Boca Raton, Fla.: CRC Press, 2012.

MLA (9th ed.) Citation

Walker, Denise C. Mass Notification and Crisis Communications: Planning, Preparedness, and Systems. CRC Press, 2012.