Referensi:
- http://www.homecuresthatwork.com/slideshow/Top-6-anti-aging-Supplements
- http://www.lifescript.com/Health/Centers/Alzheimers/Tips/5_anti-aging_supplements_worth_taking.aspx
- http://blog.lef.org/2013/10/The-Top-3-Anti-Aging-Supplements.html
Referensi: