APA
Costinot A. e. a., National Bureau of Economic Research, . (2013). Comparative advantage and optimal trade policy. Cambridge: NBER.
Chicago
Costinot Arnaud et al, National Bureau of Economic Research, . 2013. Comparative advantage and optimal trade policy. Cambridge: NBER.
Harvard
Costinot A. e. a., National Bureau of Economic Research, . (2013). Comparative advantage and optimal trade policy. Cambridge: NBER.
MLA
Costinot Arnaud et al, National Bureau of Economic Research, . Comparative advantage and optimal trade policy. Cambridge: NBER. 2013.