Sources

The 6 images in "Introduction"
1. https://jnswire.s3.amazonaws.com/jns-media/9f/ea/51726/anthrax24.jpg
2. http://indianapublicmedia.org/amomentofscience/files/2014/10/amos_214_anthrax-940x626.jpg
3. http://i.kinja-img.com/gawker-media/image/upload/s--llptE6KF--/c_scale,fl_progressive,q_80,w_800/18usnwipag74ljpg.jpg
4. http://cdn.globalbiodefense.com/wp-content/uploads/2014/07/anthrax_bacteria.jpg
5. https://upload.wikimedia.org/wikipedia/commons/7/79/Gram_Stain_Anthrax.jpg
6. http://i.dailymail.co.uk/i/pix/2012/09/03/article-2197533-14D03A4B000005DC-650_964x807.jpg

Websites used:
1. http://www.cdc.gov/anthrax/basics/index.html
2. http://www.cdc.gov/anthrax/basics/types/cutaneous.html
3. http://www.cdc.gov/anthrax/basics/types/gastrointestinal.html
4. http://www.cdc.gov/anthrax/basics/types/inhalation.html
5. http://www.cdc.gov/anthrax/basics/types/injection.html
6. http://www.cdc.gov/anthrax/basics/symptoms.html