APA
Nunn N., National Bureau Of Economic Research, . (2009). The importance of history for economic development. Cambridge: NBER.
Chicago
Nunn Nathan, National Bureau Of Economic Research, . 2009. The importance of history for economic development. Cambridge: NBER.
Harvard
Nunn N., National Bureau Of Economic Research, . (2009). The importance of history for economic development. Cambridge: NBER.
MLA
Nunn Nathan, National Bureau Of Economic Research, . The importance of history for economic development. Cambridge: NBER. 2009.