1"Caffeine: Cognitive and Physical Performance Enhancer or Psychoactive Drug?" Current Neuropharmacology. Jan 2015. Accessed: August 28, 2017.
2Carpenter, Murray. Caffeinated: How Our Daily Habit Helps, Hurts, and Hooks Us. New York, NY: Hudson Street Press, 2014.
3Clark, Taylor. Starbucked: A Double Tall Tale of Caffeine, Commerce, and Culture. New York, NY: Little, Brown and Company, 2007.
4Courtwright, David T. Forces of Habit: Drugs and the Making of the Modern World. Cambridge, MA: Harvard University Press, 2001.
5Fetters, K. Aleisha. “The Surprising Things that Happen When You Quit Caffeine.” MSN. September 23, 2015. Accessed: November 16, 2015.
6Glass, Jeremy. “11 Myths about Coffee You Need to Stop Believing Immediately.” MSN. September 2, 2015. Accessed: November 14, 2015.
7Handwerk, Brian. “Caffeinated Seas Found off U.S. Pacific Northwest.” National Geographic. July 30, 2012. Accessed: November 14, 2015.
8“How Much Caffeine Is Actually in Your Coffee, from Dunkin’ to Starbucks.” Huffington Post. Updated September 29, 2013. Accessed: November 14, 2015.
9Kady, Mathew. “Best Foods for Better Sex.” Shape. March 7, 2011. Accessed: November 14, 2015.
10Mortimer, Caroline. “The Secret to a Great Sex Life Revealed: Two Cups of Coffee a Day.” Independent. May 28, 2015. Accessed: November 14, 2015.
11Munoz, Gabriella. "Spiders on Drugs." Science Alert. July 17, 2014. Accessed: August 28, 2017.
12Neporent, Liz. “5 Weird Ways to Get Your Caffeine.” ABC News. August 22, 2013. Accessed: November 14, 2015.
13"Science Vault: Coffee As Treatment For the Plague." Science Blogs. August 13, 2007. Accessed: August 28, 2017.
14Sokol, Joshua. "Plants Spike Nectar with Caffeine and Give Bees a Buzz." New Scientist. October 15, 2015. Accessed: August 28, 2017.
15Storrs, Carina. “Coffee Could Literally Be a Life Safer.” KSL.com. November 17, 2015. Accessed: November 17, 2015.
16"Study: PR is the Second-Most-Caffeinated Profession." PR Daily. September 30, 2011. Accessed: August 28, 2017.
17Taylor, Amanda. “From Soda to Coffee: Kids’ Caffeine Consumption Is Changing.” KSL.com. April 16, 2014. Accessed: November 14, 2015.
18Venosa, Ali. “The Link between Caffeine and Your Mood.” MSN. October 22, 2015. Accessed: November 14, 2015.
19Weinberg, Bennett Alan and Bonnie K. Bealer. The World of Caffeine. New York, NY: Routledge, 2001.
20“’Why Am I So Awake?’ 12 Surprising Sources of Caffeine.” CBS. March 12, 2013. Accessed: November 14, 2015.