APA
Agrawal A. K. e. a., National Bureau Of Economic Research, . (2012). Why are some regions more innovative than others?. Cambridge: NBER.
Chicago
Agrawal Ajay K et al, National Bureau Of Economic Research, . 2012. Why are some regions more innovative than others?. Cambridge: NBER.
Harvard
Agrawal A. K. e. a., National Bureau Of Economic Research, . (2012). Why are some regions more innovative than others?. Cambridge: NBER.
MLA
Agrawal Ajay K et al, National Bureau Of Economic Research, . Why are some regions more innovative than others?. Cambridge: NBER. 2012.