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Kohlberg (1973). «The Claim to Moral Adequacy of a Highest Stage of Moral Judgment». Journal of Philosophy. 70: 630–646. JSTOR2025030. doi:10.2307/2025030
Twenge (2008). «Review of emerging adulthood: The winding road from the late teens through the twenties». American Journal of Psychology. 121: 682–687. JSTOR20445494. doi:10.2307/20445494
«The new life stage of emerging adulthood at ages 18–29 years: Implications for mental health». The Lancet Psychiatry. 1: 569–576. 2014. PMID26361316. doi:10.1016/s2215-0366(14)00080-7
«Losing One's Grip: A Bivariate Growth Curve Model of Grip Strength and Nonverbal Reasoning From Age 79 to 87 Years in the Lothian Birth Cohort 1921». The Journals of Gerontology. Series B, Psychological Sciences and Social Sciences. 66B: 699–707. 2011. PMID21743039. doi:10.1093/geronb/gbr059
«A program to prevent functional decline in physically frail, elderly persons who live at home». N Engl J Med. 347: 1068–74. 2002. PMID12362007. doi:10.1056/NEJMoa020423