239
«Sleep: A Historical Perspective,» Healthy Sleep, .
240
Aristotle, On Sleep and Sleeplessness, trans. J. I. Beare, MIT Internet Classics Archive, .
241
Duff, The Secret Life of Sleep.
242
Ahmed S. BaHammam, «Sleep from an Islamic Perspective,» Annals of Thoracic Medicine 6 (2011): 187–92.
243
Rene Descartes, Treatise of Man (Amherst: Prometheus Books, 2003), Kindle edition.
244
Homer, The Odyssey, trans. George Chapman (Hertfordshire: Wordsworth Editions, 2002), 82.
245
Gregg Jacobs, email to the author, March 11, 2015.
246
A. Roger Ekirch, email to the author, March 16, 2015.
247
Richard Allestree, The Whole Duty of Prayer Containing Devotions for Every Day in the Week, and for Several Occasions, Ordinary and Extraordinary (Ann Arbor: Text Creation Partnership), .
