Cite
MLA Citation
Shawn D. Youngstedt et al.. “Has adult sleep duration declined over the last 50+ years?.” Sleep medicine reviews, vol. 28, 2016, pp. 69–85. http://access.bl.uk/ark:/81055/vdc_100033034431.0x000024
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Shawn D. Youngstedt et al.. “Has adult sleep duration declined over the last 50+ years?.” Sleep medicine reviews, vol. 28, 2016, pp. 69–85. http://access.bl.uk/ark:/81055/vdc_100033034431.0x000024