- http://en.wikipedia.org/wiki/Cone_cell
- http://ghr.nlm.nih.gov/condition=retinoblastoma
- https://scholar.google.co.in/scholar?&q=cone+cell+scholar+artical&hl=en&as_sdt=0,5&as_vis=1\
- http://www.sciencemag.org/content/329/5990/413.short
- http://onlinelibrary.wiley.com/advanced/search/results
- http://www.cis.rit.edu/people/faculty/montag/vandplite/pages/chap_9/ch9p1.html
- https://www.google.co.in/search?q=cone+cells&espv=2&biw=1366&bih=667&tbm=isch&tbo=u&source=univ&sa=X&ei=FHoAVeypItaJuAS3-ILYAw&ved=0CDEQsAQ&dpr=1
- http://www.innerbody.com/image/nerv07.html
- http://www.ncbi.nlm.nih.gov/books/NBK11059/
- https://www.youtube.com/watch?v=UeUrqODyNOA
- https://www.youtube.com/watch?v=8AFgK24OGKE
- http://rarediseases.info.nih.gov/gard/10790/cone-rod-dystrophy/resources/1
- http://www.kellogg.umich.edu/patientcare/downloads/Understand-Cone-Dystrophy.pdf
- http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2740621/