APA
Borraz F. e. a., National Bureau Of Economic Research, . (2012). Distance and Political boundaries: Estimating border effects. Cambridge: NBER.
Chicago
Borraz Fernando et al, National Bureau Of Economic Research, . 2012. Distance and Political boundaries: Estimating border effects. Cambridge: NBER.
Harvard
Borraz F. e. a., National Bureau Of Economic Research, . (2012). Distance and Political boundaries: Estimating border effects. Cambridge: NBER.
MLA
Borraz Fernando et al, National Bureau Of Economic Research, . Distance and Political boundaries: Estimating border effects. Cambridge: NBER. 2012.
