Drake Bennett, «Happiness: A buyer’s guide,» Boston Globe (23 August 2009).
109
Tait Shanafelt, et al, «Career fit and burnout among academic faculty,» Archives of Internal Medicine (May 2009).
110
Christopher P. Niemiec, Richard M. Ryan, & Edward L. Deci, «The path taken: Consequences of attaining intrinsic and extrinsic aspirations,» Journal of Research in Personality. Vol. 43 (2009).
