APA
Callen M. e. a., National Bureau of Economic Research, . (2015). Personalities and public sector performance. Cambridge: NBER.
Chicago
Callen Michael et al, National Bureau of Economic Research, . 2015. Personalities and public sector performance. Cambridge: NBER.
Harvard
Callen M. e. a., National Bureau of Economic Research, . (2015). Personalities and public sector performance. Cambridge: NBER.
MLA
Callen Michael et al, National Bureau of Economic Research, . Personalities and public sector performance. Cambridge: NBER. 2015.