"What Is Genetic Counseling?" Genetichealth.com. Web. 11 Mar. 2011. <http://www.genetichealth.com/resources_what_is_genetic_counseling.shtml>.
"Color Blindness- Topic Overview." Webmd.com. Web. 11 Mar. 2011. <http://www.webmd.com/eye-health/tc/color-blindness-topic-overview>.
"Color Blindness." Eyecaresource.com. Web. 11 Mar. 2011. <http://www.eyecaresource.com/conditions/color-blindness/.>.
"Colour Vision Deficiency (Colour Blindness)." Medic8.com. Web. 12 Mar. 2011. <http://www.medic8.com/genetics/colour-vision-deficiency.htm.>.
"Causes of Color Blindness." Health.nytimes.com. Web. 12 Mar. 2011. <http://health.nytimes.com/health/guides/disease/color-blindness/overview.html.>.
"Effects of Color Blindness." Colblindor.com. Web. 12 Mar. 2011. <. http://www.colblindor.com/color-blindness-most-frequently-asked-questions/#cure.>.
"Color Blindness." Cigna.com. Web. 12 Mar. 2011. <http://www.cigna.com/healthinfo/hw143997.html.>.