References

​

​

Oggiono, L. (2015, January, 11). 16068862230_13812ef6e8_b. Retrieved October 5,

          2016, from https://www.flickr.com/photos/115089924@N02/16068862230

​

Audio-27582_960_720. (2012, April 11). Retrieved October 5, 2016, from

          https://pixabay.com/en/audio-sound-headset-icon-symbol-27582/

​

Lissone, M. (n.d.). Rainbow Light. Retrieved October 5, 2016, from

          http://www.publicdomainpictures.net/view-image.php?image=68532

​

Loudspeaker-48534_960_720. (2012, May 7). Retrieved October 5, 2016, from 

          https://pixabay.com/en/loudspeaker-volume-music-audio-48534/