1Ayhan, Keremcan. "Extreme Sports World Records." Adventure Herald. August 5, 2015. Accessed: April 9, 2020.
2Belluck, Pam. "Get Out Your Boards: Extreme Ironing May Soon Be Hot." New York Times, May 21, 2004. Accessed: April 9, 2020.
3Bhatt, Mamta. "The World’s Most Extreme Sports: Volcano Boarding." ATI. March 26, 2012.
4Cohen, Rhonda, Bahman Baluch, and Linda J. Duffy. "Defining Extreme Sport: Conceptions and Misconceptions." Frontiers in Psychology, October 18, 2018. Accessed: March 28, 2020.
5Crossingham, John, and Bobbie Kalman. Extreme Sports. New York: Crabtree Publishing Company, 2004.
6"Generation Y Drives Increasingly Popular Extreme Sports." American Sports Data. August 1, 2002. Accessed: March 28, 2020.
7Kidd, Timothy. Rock Climbing. 2009.
8Killcoyne, Hope, ed. Extreme Sports and Their Greatest Competitors. New York: Rosen Publishing Group, Inc., 2015.
9Loria, Kevin. "8 of The Most Dangerous Adventure Sports." Business Insider, September 9, 2016. Accessed: March 27, 2020.
10Mozes, Alan. "'Extreme Sports' Linked to 40,000 Head and Neck Injuries Per Year." Health Day, March 14, 2014. Accessed: March 28, 2020.
11"Silence is Golden." ESPN. Accessed: March 31, 2020.
12"The Five Deadliest Extreme Sports." Rap Jumping. Accessed: March 28, 2020.
13"Tiny Broadwick and Other Famous Female Skydivers." Long Island Skydiving. March 20, 2018. Accessed: March 31, 2020.
14"Top 10 Skydiving Fun Facts." Wisconsin Skydiving Center. Accessed: March 31, 2020.
15Woods, Mark, and Ruth Owen. Xtreme! New York: Gareth Stevens, 2011.