Jackie Wattles, «Goldman Sachs Bans Interns from Staying Overnight at the Office,» CNN Money, June 17, 2015, .
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Jena McGregor, «The Average Worker Loses 11 Days of Productivity Each Year Due to Insomnia, and Companies Are Taking Notice,» The Washington Post, July 30, 2015, http://www.washingtonpost.com.
