APA
Berge L. I. O. e. a., National Bureau of Economic Research, . (2015). How strong are ethnic preferences?. Cambridge: NBER.
Chicago
Berge Lars Ivar Oppedal et al, National Bureau of Economic Research, . 2015. How strong are ethnic preferences?. Cambridge: NBER.
Harvard
Berge L. I. O. e. a., National Bureau of Economic Research, . (2015). How strong are ethnic preferences?. Cambridge: NBER.
MLA
Berge Lars Ivar Oppedal et al, National Bureau of Economic Research, . How strong are ethnic preferences?. Cambridge: NBER. 2015.