1. 1) Seligman, M.E.P.: Flourishi: A Visionalry New Understanding of Happiness and Well-being. Nicholas Brealey Publishing, 2011
2. 2) Frey, B. & Stutzer, A.: What Can Economists Learn From Happiness Research? Journal of Economic Literature, 40(2), pp. 402-435, 2002
3. 3) OECD: How's Life? 2020 Measuring Well-Being, 2020 ( https://www.oecd-ilibrary.org/economics/how-s-life/volume-/issue-_9870c393-en ) (accessed 2021.2.8)（参照 2021.2.8）
4. 4) Helliwell, J.F., Layard, R., & Sachs, J.D. (eds.): World Happiness Report 2020. New York: Sustainable Development Solutions Network, 2020 ( http://worldhappiness.report/ ) (accessed 2021.2.8)（参照 2021.2.8）
5. 5) Shimabara, M. (eds.): Housing Happiness Theory Epsode.3, Lonely Happy Liberties, LIFULL HOME’S Research Institute, 2020 島原万丈（編）：住宅幸福論 Episode.3, ひとり暮らしの時代, LIFULL HOME’S 総研, 2020