Please see attached as all the information is there.
One of these three articles should be used as a source as well as other incite sources.

http://highered.mheducation.com/olc2/dl/807271/chap19elem4.html

https://www.ourdocuments.gov/doc.php?flash=true&doc=53&page=transcript

https://www.ourdocuments.gov/doc.php?flash=true&doc=55&page=transcript