MLA Citations

"Sulfur." WebElements Periodic Table of the Elements. WebElements, n.d. Web. 11 Oct. 2014.

"The Element Sulfur." It's Elemental -. Steve Gagnon, n.d. Web. 11 Oct. 2014.

"Interactive Periodic Table: Sulfur." Infoplease. Infoplease, n.d. Web. 11 Oct. 2014. <http://www.infoplease.com/periodictable.php?id=16>.

Helmenstine, Anne M. "Sulfur Facts." About. About Education, n.d. Web. 10 Oct. 2014. <http://chemistry.about.com/od/elementfacts/a/sulfur.htm>.