Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Rory Adams (Free High School Science Texts Project), Mark Horner, and Heather Williams, Transverse Waves - Grade 10. January 24, 2013."
http://cnx.org/content/m32635/latest/
OpenStax CNX
CC BY 3.0.