Alexis Sobel Fitts, «Teens Obsessed with Facebook May Struggle with Anxiety, Sleep Problems,» The Huffington Post, September 14, 2015, .
700
Ibid.
701
S. H. Onen, F. Onen, D. Bailly, and P. Parquet, «Prevention and Treatment of Sleep Disorders Through Regulation of Sleeping Habits,» La Presse Medicale 23 (1994): 485–89.
