Irving, P. H. (2014). The upside of aging: How long life is changing the world of health, work, innovation, policy, and purpose. Wiley. https://doi.org/10.1002/9781118691823
Παραπομπή σε μορφή Chicago (17η εκδ.)Irving, Paul H. The Upside of Aging: How Long Life Is Changing the World of Health, Work, Innovation, Policy, and Purpose. Hoboken, New Jersey: Wiley, 2014. https://doi.org/10.1002/9781118691823.
Παραπομπή σε μορφή MLA (8th εκδ.)Irving, Paul H. The Upside of Aging: How Long Life Is Changing the World of Health, Work, Innovation, Policy, and Purpose. Wiley, 2014. https://doi.org/10.1002/9781118691823.
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