5. National Hydration Council. (2016, September 1).
6. Academy of Nutrition and Dietetics. (2017, May 2).
7. European Hydration Institute. (2014, September 2).
8. American Heart Association. (2016, August 22).
9. Mayo Clinic. (n.d.).
Неделя 4. Любите книги
1. Reading «Can Help Reduce Stress.» (2009, March 30).