APA
(2005). Homeland security. Dubuque, IA: McGraw-Hill/Duskin.
Chicago
2005. Homeland security. Dubuque, IA: McGraw-Hill/Duskin.
Harvard
(2005). Homeland security. Dubuque, IA: McGraw-Hill/Duskin.
MLA
Homeland security. Dubuque, IA: McGraw-Hill/Duskin. 2005.