Davis, Samantha. "The Physics of Climbing Anchors." Physics of Climbing Anchors. University of Alaska Fairbanks, n.d. Web. 22 Nov. 2014. <http://ffden-2.phys.uaf.edu/211_fall2010.web.dir/Samantha_Davis/Intro.html>.

Ellison, Julie. "Learn This: Master Laybacks." Climbing. N.p., n.d. Web. 22 Nov. 2014. <http%3A%2F%2Fwww.climbing.com%2Fskill%2Flearn-this-master-laybacks-with-tips-from-cheyne-lempe%2F>.

Green, Stewart. "Learn How to Layback up Climbing Cracks and Aretes." About. N.p., n.d. Web. 22 Nov. 2014. <http://climbing.about.com/od/CrackClimbing/tp/Laybacking-An-Essential-Climbing-Movement-Technique.htm>.

"How to Choose Climbing Ropes." Gearx. N.p., n.d. Web. 22 Nov. 2014. <http://gearx.com/blog/knowledge/climbing/how-to-choose-a-climbing-rope/>.

Knight, Randall Dewey. Physics for Scientists and Engineers: A Strategic Approach: With Modern Physics. Pearson: 2013.

Reeves, Mark. "Equipment Care and Maintenance." Life in the Vertical. N.p., 27 Nov. 2009. Web. 22 Nov. 2014. <http://lifeinthevertical.co.uk/blogs/climbingcoach/tag/rock-climbing-equipment-maintenance-and-care/>.

Ruina, Andy, and Rudra Pratap. Statics and Dynamics. N.p.: Oxford UP, n.d. Cornell.edu. Jan. 2002. 22 Nov. 2014.

"Setting a Multi-Pitch Anchor." ClimbingTechniques.org. N.p., n.d. Web. 22 Nov. 2014. <http://www.climbingtechniques.org/setting-a-multi-pitch-anchor.html>.

"Understanding Fall Factors." Flatliners Southeast Climbing. N.p., n.d. Web. 22 Nov. 2014. <http://www.southeastclimbing.com/faq/faq_fall_factor.htm>.