“Advertising Techniques.” YouTube video, 5:34. Posted May 17, 2011. http://www.youtube.com/ watch?v=NdLsQcYyAcc.
Burns, Ken. “The Civil War: The Gettysburg Address.” YouTube video, 5:54. Posted August 2, 2012. http://www.youtube.com/watch?v=qCXUbQ4JjXI&feature=youtu.be.
“Polar Vortex Freezes Parts of US.” YouTube video, 2:31. Posted January 7, 2014. https://www.youtube.com/watch?v=hlEkS_MuS8g.
“The Twilight Zone Theme.” YouTube video, 0:57. Posted July 12, 2009. http://www.youtube.com/ watch?v=XVSRm80WzZk.