APA
Aknin L. B., National Bureau of Economic Research, Mayraz G. & Helliwell J. F. (2014). Emotional consequences of donation opportunities. Cambridge: NBER.
Chicago
Aknin Lara B, National Bureau of Economic Research, Mayraz Guy and Helliwell John F. 2014. Emotional consequences of donation opportunities. Cambridge: NBER.
Harvard
Aknin L. B., National Bureau of Economic Research, Mayraz G. and Helliwell J. F. (2014). Emotional consequences of donation opportunities. Cambridge: NBER.
MLA
Aknin Lara B, National Bureau of Economic Research, Mayraz Guy and Helliwell John F. Emotional consequences of donation opportunities. Cambridge: NBER. 2014.