Gaya APA

Natural Disasters. (2006). New York: [s.n.].

Gaya Chicago

Natural Disasters. 4. New York: [s.n.], 2006. Text.

Gaya MLA

Natural Disasters. 4. New York: [s.n.], 2006. Text.

Gaya Turabian

Natural Disasters. New York: [s.n.], 2006. Print.