(2020. október 1.) „Fertility, mortality, migration, and population scenarios for 195 countries and territories from 2017 to 2100: a forecasting analysis for the Global Burden of Disease Study”. Lancet396 (10258), 1285–1306. o. DOI:10.1016/S0140-6736(20)30677-2. PMID 32679112.
(2011. július 1.) „Cultural Perspectives on Aging and Well-Being: A Comparison of Japan and the United States”. The International Journal of Aging and Human Development73 (1), 73–98. o. DOI:10.2190/AG.73.1.d. PMID 21922800.
(2020. október 1.) „Fertility, mortality, migration, and population scenarios for 195 countries and territories from 2017 to 2100: a forecasting analysis for the Global Burden of Disease Study”. Lancet396 (10258), 1285–1306. o. DOI:10.1016/S0140-6736(20)30677-2. PMID 32679112.
(2011. július 1.) „Cultural Perspectives on Aging and Well-Being: A Comparison of Japan and the United States”. The International Journal of Aging and Human Development73 (1), 73–98. o. DOI:10.2190/AG.73.1.d. PMID 21922800.
Web Clock of Child Population in Japan. Mail Research Group, Graduate School of Economics and Management, Tohoku University. [2018. július 18-i dátummal az eredetiből archiválva]. (Hozzáférés: 2017. március 14.)
Web Clock of Child Population in Japan. Mail Research Group, Graduate School of Economics and Management, Tohoku University. [2018. július 18-i dátummal az eredetiből archiválva]. (Hozzáférés: 2017. március 14.)