APA
Badia-Miro M., National Bureau of Economic Research & Marín A. C. (2014). Geography, policy or productivity?. Cambridge: NBER.
Chicago
Badia-Miro Marc, National Bureau of Economic Research and Marín Anna Carreras. 2014. Geography, policy or productivity?. Cambridge: NBER.
Harvard
Badia-Miro M., National Bureau of Economic Research and Marín A. C. (2014). Geography, policy or productivity?. Cambridge: NBER.
MLA
Badia-Miro Marc, National Bureau of Economic Research and Marín Anna Carreras. Geography, policy or productivity?. Cambridge: NBER. 2014.