Aimee Molloy, "Sleep Training At 8 Weeks: 'Do You Have the Guts?' " The New York Times, March 26, 2015, http://www.nytimes.com.
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Zach Johnson, «Zoe Saldana Is Having a Hard Time Sleep Training Her Twins (Although Vodka Makes It a Little Easier) – Watch Now!» E! Online, June 12, 2015, .
