Cita APA

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

Citación estilo Chicago

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

Cita MLA

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