APA
Acemoglu D., Dell Melissa & National Bureau Of Economic Research. (2009). Productivity differences between and within countries. Cambridge: NBER.
Chicago
Acemoglu Daron, Dell Melissa and National Bureau Of Economic Research. 2009. Productivity differences between and within countries. Cambridge: NBER.
Harvard
Acemoglu D., Dell Melissa and National Bureau Of Economic Research. (2009). Productivity differences between and within countries. Cambridge: NBER.
MLA
Acemoglu Daron, Dell Melissa and National Bureau Of Economic Research. Productivity differences between and within countries. Cambridge: NBER. 2009.
