https://www.google.com.au/patents/US6506148

https://plus.google.com/+MauriceKing100/posts/6jJ4YHCSR1g?_utm_source=1-2-2

http://stonedsexual.tumblr.com/post/145123148644

http://stonedsexual.tumblr.com/post/145559735669/for-years-mental-health-professionals-taught

http://thinkprogress.org/health/2014/01/16/3175831/myth-absent-black-father/

http://www.pcmag.com/article2/0,2817,2405014,00.asp