6.+References

= REFERENCES: =

California Earthquake. Than217. Video retrieved 3 Dec 2010 from [].

Dramatic Footage: Tornado Destroys House. CBS News Online. Video retrieved 3 Dec 2010 from [].

Hurricane Gustav Footage. Globalimageworks. Video retrieved 3 Dec 2010 from [].

Incredible Tsunami Footage. Oldboy11x. Video retrieved 3 Dec 2010 from [].

Violent Volcanos. National Geographic. Video retrieved 3 Dec 2010 from [].

Wiki Rubric. Rubistar.org. Rubric retrieved 3 Dec 2010 from [].