George Vaillant, Triumphs of Experience: The Men of the Harvard Grant Study (Cambridge, MA: Belknap, 2012), 61.
883
George Vaillant, Triumphs of Experience: The Men of the Harvard Grant Study (Cambridge, MA: Belknap, 2012), p. 72; см. также Scott Stossel, «What Makes Us Happy, Revisited: A New Look at the Famous Harvard Study of What Makes People Thrive», The Atlantic, May 2013, по состоянию на 7 января 2017 года, .
